Greg Bender
http://www.thisoldtractor.com/gtbender
O-ring sizes - American inch system
I learned much of this information from the Frederick Seal and American Seal and Packing websites.
Standards and sizing
The American inch system for o-rings is comprised of a very neat and tidy, highly organized set of 349 sizes. These sizes are based on the Aerospace Standard 568 published by the Society of Automotive Engineers. Each size is designated with a "dash" number and can be described using two values: the inside diameter and diameter of the cross-section. Except for the -9## o-rings, all American inch o-rings can be categorized into seven cross-sections and 119 inside diameters.
The nominal size for any given American inch o-ring, however, is different than the actual physical dimension of the o-ring. As an example, consider the -001 o-ring. Nominally, it is described as having a cross-section of 1/32". The decimal equivalent of 1/32" is 0.03125". However, the actual cross-section is 0.040". Why the discrepancy? The nominal sizing of the American inch system is meant to describe the size of the groove in which the o-ring resides. Since all o-rings must be squeezed by about 10% to 15% in order to seal properly, the extra size of the o-ring handles the needed squeeze.
O-rings with a nominal cross-section of 1/32" (-001)
| Dash number | Nominal size in inches | Decimal size in inches | Decimal size in millimeters |
|---|
| | ID | OD | Cross-section | ID | Cross-section | ID | Cross-section |
|---|
| -001 | 1/32 | 3/32 | 1/32 | .029 ± 0.004 | .040 ± 0.003 | 0.74 ± 0.10 | 1.02 ± 0.08 |
O-rings with a nominal cross-section of 3/64" (-002)
| Dash number | Nominal size in inches | Decimal size in inches | Decimal size in millimeters |
|---|
| | ID | OD | Cross-section | ID | Cross-section | ID | Cross-section |
|---|
| -002 | 3/64 | 9/64 | 3/64 | .042 ± 0.004 | .050 ± 0.003 | 1.07 ± 0.10 | 1.27 ± 0.08 |
O-rings with a nominal cross-section of 1/16" (-0##)
| Dash number | Nominal size in inches | Decimal size in inches | Decimal size in millimeters |
|---|
| | ID | OD | Cross-section | ID | Cross-section | ID | Cross-section |
|---|
| -003 | 1/16 | 3/16 | 1/16 | .056 ± 0.004 | .060 ± 0.003 | 1.42 ± 0.10 | 1.52 ± 0.08 |
| -004 | 5/64 | 13/64 | 1/16 | .070 ± 0.005 | .070 ± 0.003 | 1.78 ± 0.13 | 1.78 ± 0.08 |
| -005 | 3/32 | 7/32 | 1/16 | .101 ± 0.005 | .070 ± 0.003 | 2.57 ± 0.13 | 1.78 ± 0.08 |
| -006 | 1/8 | 1/4 | 1/16 | .114 ± 0.005 | .070 ± 0.003 | 2.90 ± 0.13 | 1.78 ± 0.08 |
| -007 | 5/32 | 9/32 | 1/16 | .145 ± 0.005 | .070 ± 0.003 | 3.68 ± 0.13 | 1.78 ± 0.08 |
| -008 | 3/16 | 5/16 | 1/16 | .176 ± 0.005 | .070 ± 0.003 | 4.47 ± 0.13 | 1.78 ± 0.08 |
| -009 | 7/32 | 11/32 | 1/16 | .208 ± 0.005 | .070 ± 0.003 | 5.28 ± 0.13 | 1.78 ± 0.08 |
| -010 | 1/4 | 3/8 | 1/16 | .239 ± 0.005 | .070 ± 0.003 | 6.07 ± 0.13 | 1.78 ± 0.08 |
| -011 | 5/16 | 7/16 | 1/16 | .301 ± 0.005 | .070 ± 0.003 | 7.65 ± 0.13 | 1.78 ± 0.08 |
| -012 | 3/8 | 1/2 | 1/16 | .364 ± 0.005 | .070 ± 0.003 | 9.25 ± 0.13 | 1.78 ± 0.08 |
| -013 | 7/16 | 9/16 | 1/16 | .426 ± 0.005 | .070 ± 0.003 | 10.82 ± 0.13 | 1.78 ± 0.08 |
| -014 | 1/2 | 5/8 | 1/16 | .489 ± 0.005 | .070 ± 0.003 | 12.42 ± 0.13 | 1.78 ± 0.08 |
| -015 | 9/16 | 11/16 | 1/16 | .551 ± 0.007 | .070 ± 0.003 | 14.00 ± 0.18 | 1.78 ± 0.08 |
| -016 | 5/8 | 3/4 | 1/16 | .614 ± 0.009 | .070 ± 0.003 | 15.60 ± 0.23 | 1.78 ± 0.08 |
| -017 | 11/16 | 13/16 | 1/16 | .676 ± 0.009 | .070 ± 0.003 | 17.17 ± 0.23 | 1.78 ± 0.08 |
| -018 | 3/4 | 7/8 | 1/16 | .739 ± 0.009 | .070 ± 0.003 | 18.77 ± 0.23 | 1.78 ± 0.08 |
| -019 | 13/16 | 15/16 | 1/16 | .801 ± 0.009 | .070 ± 0.003 | 20.35 ± 0.23 | 1.78 ± 0.08 |
| -020 | 7/8 | 1 | 1/16 | .864 ± 0.009 | .070 ± 0.003 | 21.95 ± 0.23 | 1.78 ± 0.08 |
| -021 | 15/16 | 1-1/16 | 1/16 | .926 ± 0.009 | .070 ± 0.003 | 23.52 ± 0.23 | 1.78 ± 0.08 |
| -022 | 1 | 1-1/8 | 1/16 | .989 ± 0.010 | .070 ± 0.003 | 25.12 ± 0.25 | 1.78 ± 0.08 |
| -023 | 1-1/16 | 1-3/16 | 1/16 | 1.051 ± 0.010 | .070 ± 0.003 | 26.70 ± 0.25 | 1.78 ± 0.08 |
| -024 | 1-1/8 | 1-1/4 | 1/16 | 1.114 ± 0.010 | .070 ± 0.003 | 28.30 ± 0.25 | 1.78 ± 0.08 |
| -025 | 1-3/16 | 1-5/16 | 1/16 | 1.176 ± 0.011 | .070 ± 0.003 | 29.87 ± 0.28 | 1.78 ± 0.08 |
| -026 | 1-1/4 | 1-3/8 | 1/16 | 1.239 ± 0.011 | .070 ± 0.003 | 31.47 ± 0.28 | 1.78 ± 0.08 |
| -027 | 1-5/16 | 1-7/16 | 1/16 | 1.301 ± 0.011 | .070 ± 0.003 | 33.05 ± 0.28 | 1.78 ± 0.08 |
| -028 | 1-3/8 | 1-1/2 | 1/16 | 1.364 ± 0.013 | .070 ± 0.003 | 34.65 ± 0.33 | 1.78 ± 0.08 |
| -029 | 1-1/2 | 1-5/8 | 1/16 | 1.489 ± 0.013 | .070 ± 0.003 | 37.82 ± 0.33 | 1.78 ± 0.08 |
| -030 | 1-5/8 | 1-3/4 | 1/16 | 1.614 ± 0.013 | .070 ± 0.003 | 41.00 ± 0.33 | 1.78 ± 0.08 |
| -031 | 1-3/4 | 1-7/8 | 1/16 | 1.739 ± 0.015 | .070 ± 0.003 | 44.17 ± 0.38 | 1.78 ± 0.08 |
| -032 | 1-7/8 | 2 | 1/16 | 1.864 ± 0.015 | .070 ± 0.003 | 47.35 ± 0.38 | 1.78 ± 0.08 |
| -033 | 2 | 2-1/8 | 1/16 | 1.989 ± 0.018 | .070 ± 0.003 | 50.52 ± 0.46 | 1.78 ± 0.08 |
| -034 | 2-1/8 | 2-1/4 | 1/16 | 2.114 ± 0.018 | .070 ± 0.003 | 53.70 ± 0.46 | 1.78 ± 0.08 |
| -035 | 2-1/4 | 2-3/8 | 1/16 | 2.239 ± 0.018 | .070 ± 0.003 | 56.87 ± 0.46 | 1.78 ± 0.08 |
| -036 | 2-3/8 | 2-1/2 | 1/16 | 2.364 ± 0.018 | .070 ± 0.003 | 60.05 ± 0.46 | 1.78 ± 0.08 |
| -037 | 2-1/2 | 2-5/8 | 1/16 | 2.489 ± 0.018 | .070 ± 0.003 | 63.22 ± 0.46 | 1.78 ± 0.08 |
| -038 | 2-5/8 | 2-3/4 | 1/16 | 2.614 ± 0.020 | .070 ± 0.003 | 66.40 ± 0.51 | 1.78 ± 0.08 |
| -039 | 2-3/4 | 2-7/8 | 1/16 | 2.739 ± 0.020 | .070 ± 0.003 | 69.57 ± 0.51 | 1.78 ± 0.08 |
| -040 | 2-7/8 | 3 | 1/16 | 2.864 ± 0.020 | .070 ± 0.003 | 72.75 ± 0.51 | 1.78 ± 0.08 |
| -041 | 3 | 3-1/8 | 1/16 | 2.989 ± 0.024 | .070 ± 0.003 | 75.92 ± 0.61 | 1.78 ± 0.08 |
| -042 | 3-1/4 | 3-3/8 | 1/16 | 3.239 ± 0.024 | .070 ± 0.003 | 82.27 ± 0.61 | 1.78 ± 0.08 |
| -043 | 3-1/2 | 3-5/8 | 1/16 | 3.489 ± 0.024 | .070 ± 0.003 | 88.62 ± 0.61 | 1.78 ± 0.08 |
| -044 | 3-3/4 | 3-7/8 | 1/16 | 3.739 ± 0.027 | .070 ± 0.003 | 94.97 ± 0.69 | 1.78 ± 0.08 |
| -045 | 4 | 4-1/8 | 1/16 | 3.989 ± 0.027 | .070 ± 0.003 | 101.32 ± 0.69 | 1.78 ± 0.08 |
| -046 | 4-1/4 | 4-3/8 | 1/16 | 4.239 ± 0.030 | .070 ± 0.003 | 107.67 ± 0.76 | 1.78 ± 0.08 |
| -047 | 4-1/2 | 4-5/8 | 1/16 | 4.489 ± 0.030 | .070 ± 0.003 | 114.02 ± 0.76 | 1.78 ± 0.08 |
| -048 | 4-3/4 | 4-7/8 | 1/16 | 4.739 ± 0.030 | .070 ± 0.003 | 120.37 ± 0.76 | 1.78 ± 0.08 |
| -049 | 5 | 5-1/8 | 1/16 | 4.989 ± 0.037 | .070 ± 0.003 | 126.72 ± 0.94 | 1.78 ± 0.08 |
| -050 | 5-1/4 | 5-3/8 | 1/16 | 5.239 ± 0.037 | .070 ± 0.003 | 133.07 ± 0.94 | 1.78 ± 0.08 |
O-rings with a nominal cross-section of 3/32" (-1##)
| Dash number | Nominal size in inches | Decimal size in inches | Decimal size in millimeters |
|---|
| | ID | OD | Cross-section | ID | Cross-section | ID | Cross-section |
|---|
| -102 | 1/16 | 1/4 | 3/32 | .049 ± 0.005 | .103 ± 0.003 | 1.24 ± 0.13 | 2.62 ± 0.08 |
| -103 | 3/32 | 9/32 | 3/32 | .081 ± 0.005 | .103 ± 0.003 | 2.06 ± 0.13 | 2.62 ± 0.08 |
| -104 | 1/8 | 5/16 | 3/32 | .112 ± 0.005 | .103 ± 0.003 | 2.84 ± 0.13 | 2.62 ± 0.08 |
| -105 | 5/32 | 11/32 | 3/32 | .143 ± 0.005 | .103 ± 0.003 | 3.63 ± 0.13 | 2.62 ± 0.08 |
| -106 | 3/16 | 3/8 | 3/32 | .174 ± 0.005 | .103 ± 0.003 | 4.42 ± 0.13 | 2.62 ± 0.08 |
| -107 | 7/32 | 13/32 | 3/32 | .206 ± 0.005 | .103 ± 0.003 | 5.23 ± 0.13 | 2.62 ± 0.08 |
| -108 | 1/4 | 7/16 | 3/32 | .237 ± 0.005 | .103 ± 0.003 | 6.02 ± 0.13 | 2.62 ± 0.08 |
| -109 | 5/16 | 1/2 | 3/32 | .299 ± 0.005 | .103 ± 0.003 | 7.59 ± 0.13 | 2.62 ± 0.08 |
| -110 | 3/8 | 9/16 | 3/32 | .362 ± 0.005 | .103 ± 0.003 | 9.19 ± 0.13 | 2.62 ± 0.08 |
| -111 | 7/16 | 5/8 | 3/32 | .424 ± 0.005 | .103 ± 0.003 | 10.77 ± 0.13 | 2.62 ± 0.08 |
| -112 | 1/2 | 11/16 | 3/32 | .487 ± 0.005 | .103 ± 0.003 | 12.37 ± 0.13 | 2.62 ± 0.08 |
| -113 | 9/16 | 3/4 | 3/32 | .549 ± 0.007 | .103 ± 0.003 | 13.94 ± 0.18 | 2.62 ± 0.08 |
| -114 | 5/8 | 13/16 | 3/32 | .612 ± 0.009 | .103 ± 0.003 | 15.54 ± 0.23 | 2.62 ± 0.08 |
| -115 | 11/16 | 7/8 | 3/32 | .674 ± 0.009 | .103 ± 0.003 | 17.12 ± 0.23 | 2.62 ± 0.08 |
| -116 | 3/4 | 15/16 | 3/32 | .737 ± 0.009 | .103 ± 0.003 | 18.72 ± 0.23 | 2.62 ± 0.08 |
| -117 | 13/16 | 1 | 3/32 | .799 ± 0.010 | .103 ± 0.003 | 20.29 ± 0.25 | 2.62 ± 0.08 |
| -118 | 7/8 | 1-1/16 | 3/32 | .862 ± 0.010 | .103 ± 0.003 | 21.89 ± 0.25 | 2.62 ± 0.08 |
| -119 | 15/16 | 1-1/8 | 3/32 | .924 ± 0.010 | .103 ± 0.003 | 23.47 ± 0.25 | 2.62 ± 0.08 |
| -120 | 1 | 1-3/16 | 3/32 | .987 ± 0.010 | .103 ± 0.003 | 25.07 ± 0.25 | 2.62 ± 0.08 |
| -121 | 1-1/16 | 1-1/4 | 3/32 | 1.049 ± 0.010 | .103 ± 0.003 | 26.64 ± 0.25 | 2.62 ± 0.08 |
| -122 | 1-1/8 | 1-5/16 | 3/32 | 1.112 ± 0.010 | .103 ± 0.003 | 28.24 ± 0.25 | 2.62 ± 0.08 |
| -123 | 1-3/16 | 1-3/8 | 3/32 | 1.174 ± 0.012 | .103 ± 0.003 | 29.82 ± 0.30 | 2.62 ± 0.08 |
| -124 | 1-1/4 | 1-7/16 | 3/32 | 1.237 ± 0.012 | .103 ± 0.003 | 31.42 ± 0.30 | 2.62 ± 0.08 |
| -125 | 1-5/16 | 1-1/2 | 3/32 | 1.299 ± 0.012 | .103 ± 0.003 | 32.99 ± 0.30 | 2.62 ± 0.08 |
| -126 | 1-3/8 | 1-9/16 | 3/32 | 1.362 ± 0.012 | .103 ± 0.003 | 34.59 ± 0.30 | 2.62 ± 0.08 |
| -127 | 1-7/16 | 1-5/8 | 3/32 | 1.424 ± 0.012 | .103 ± 0.003 | 36.17 ± 0.30 | 2.62 ± 0.08 |
| -128 | 1-1/2 | 1-11/16 | 3/32 | 1.487 ± 0.012 | .103 ± 0.003 | 37.77 ± 0.30 | 2.62 ± 0.08 |
| -129 | 1-9/16 | 1-3/4 | 3/32 | 1.549 ± 0.015 | .103 ± 0.003 | 39.34 ± 0.38 | 2.62 ± 0.08 |
| -130 | 1-5/8 | 1-13/16 | 3/32 | 1.612 ± 0.015 | .103 ± 0.003 | 40.94 ± 0.38 | 2.62 ± 0.08 |
| -131 | 1-11/16 | 1-7/8 | 3/32 | 1.674 ± 0.015 | .103 ± 0.003 | 42.52 ± 0.38 | 2.62 ± 0.08 |
| -132 | 1-3/4 | 1-15/16 | 3/32 | 1.737 ± 0.015 | .103 ± 0.003 | 44.12 ± 0.38 | 2.62 ± 0.08 |
| -133 | 1-13/16 | 2 | 3/32 | 1.799 ± 0.015 | .103 ± 0.003 | 45.69 ± 0.38 | 2.62 ± 0.08 |
| -134 | 1-7/8 | 2-1/16 | 3/32 | 1.862 ± 0.015 | .103 ± 0.003 | 47.29 ± 0.38 | 2.62 ± 0.08 |
| -135 | 1-15/16 | 2-1/8 | 3/32 | 1.925 ± 0.017 | .103 ± 0.003 | 48.90 ± 0.43 | 2.62 ± 0.08 |
| -136 | 2 | 2-3/16 | 3/32 | 1.987 ± 0.017 | .103 ± 0.003 | 50.47 ± 0.43 | 2.62 ± 0.08 |
| -137 | 2-1/16 | 2-1/4 | 3/32 | 2.050 ± 0.017 | .103 ± 0.003 | 52.07 ± 0.43 | 2.62 ± 0.08 |
| -138 | 2-1/8 | 2-5/16 | 3/32 | 2.112 ± 0.017 | .103 ± 0.003 | 53.64 ± 0.43 | 2.62 ± 0.08 |
| -139 | 2-3/16 | 2-3/8 | 3/32 | 2.175 ± 0.017 | .103 ± 0.003 | 55.25 ± 0.43 | 2.62 ± 0.08 |
| -140 | 2-1/4 | 2-7/16 | 3/32 | 2.237 ± 0.017 | .103 ± 0.003 | 56.82 ± 0.43 | 2.62 ± 0.08 |
| -141 | 2-5/16 | 2-1/2 | 3/32 | 2.300 ± 0.020 | .103 ± 0.003 | 58.42 ± 0.51 | 2.62 ± 0.08 |
| -142 | 2-3/8 | 2-9/16 | 3/32 | 2.362 ± 0.020 | .103 ± 0.003 | 59.99 ± 0.51 | 2.62 ± 0.08 |
| -143 | 2-7/16 | 2-5/8 | 3/32 | 2.425 ± 0.020 | .103 ± 0.003 | 61.60 ± 0.51 | 2.62 ± 0.08 |
| -144 | 2-1/2 | 2-11/16 | 3/32 | 2.487 ± 0.020 | .103 ± 0.003 | 63.17 ± 0.51 | 2.62 ± 0.08 |
| -145 | 2-9/16 | 2-3/4 | 3/32 | 2.550 ± 0.020 | .103 ± 0.003 | 64.77 ± 0.51 | 2.62 ± 0.08 |
| -146 | 2-5/8 | 2-13/16 | 3/32 | 2.612 ± 0.020 | .103 ± 0.003 | 66.34 ± 0.51 | 2.62 ± 0.08 |
| -147 | 2-11/16 | 2-7/8 | 3/32 | 2.675 ± 0.022 | .103 ± 0.003 | 67.95 ± 0.56 | 2.62 ± 0.08 |
| -148 | 2-3/4 | 2-15/16 | 3/32 | 2.737 ± 0.022 | .103 ± 0.003 | 69.52 ± 0.56 | 2.62 ± 0.08 |
| -149 | 2-13/16 | 3 | 3/32 | 2.800 ± 0.022 | .103 ± 0.003 | 71.12 ± 0.56 | 2.62 ± 0.08 |
| -150 | 2-7/8 | 3-1/16 | 3/32 | 2.862 ± 0.022 | .103 ± 0.003 | 72.69 ± 0.56 | 2.62 ± 0.08 |
| -151 | 3 | 3-3/16 | 3/32 | 2.987 ± 0.024 | .103 ± 0.003 | 75.87 ± 0.61 | 2.62 ± 0.08 |
| -152 | 3-1/4 | 3-7/16 | 3/32 | 3.237 ± 0.024 | .103 ± 0.003 | 82.22 ± 0.61 | 2.62 ± 0.08 |
| -153 | 3-1/2 | 3-11/16 | 3/32 | 3.487 ± 0.024 | .103 ± 0.003 | 88.57 ± 0.61 | 2.62 ± 0.08 |
| -154 | 3-3/4 | 3-15/16 | 3/32 | 3.737 ± 0.028 | .103 ± 0.003 | 94.92 ± 0.71 | 2.62 ± 0.08 |
| -155 | 4 | 4-3/16 | 3/32 | 3.987 ± 0.028 | .103 ± 0.003 | 101.27 ± 0.71 | 2.62 ± 0.08 |
| -156 | 4-1/4 | 4-7/16 | 3/32 | 4.237 ± 0.030 | .103 ± 0.003 | 107.62 ± 0.76 | 2.62 ± 0.08 |
| -157 | 4-1/2 | 4-11/16 | 3/32 | 4.487 ± 0.030 | .103 ± 0.003 | 113.97 ± 0.76 | 2.62 ± 0.08 |
| -158 | 4-3/4 | 4-15/16 | 3/32 | 4.737 ± 0.030 | .103 ± 0.003 | 120.32 ± 0.76 | 2.62 ± 0.08 |
| -159 | 5 | 5-3/16 | 3/32 | 4.987 ± 0.035 | .103 ± 0.003 | 126.67 ± 0.89 | 2.62 ± 0.08 |
| -160 | 5-1/4 | 5-7/16 | 3/32 | 5.237 ± 0.035 | .103 ± 0.003 | 133.02 ± 0.89 | 2.62 ± 0.08 |
| -161 | 5-1/2 | 5-11/16 | 3/32 | 5.487 ± 0.035 | .103 ± 0.003 | 139.37 ± 0.89 | 2.62 ± 0.08 |
| -162 | 5-3/4 | 5-15/16 | 3/32 | 5.737 ± 0.035 | .103 ± 0.003 | 145.72 ± 0.89 | 2.62 ± 0.08 |
| -163 | 6 | 6-3/16 | 3/32 | 5.987 ± 0.035 | .103 ± 0.003 | 152.07 ± 0.89 | 2.62 ± 0.08 |
| -164 | 6-1/4 | 6-7/16 | 3/32 | 6.237 ± 0.040 | .103 ± 0.003 | 158.42 ± 1.02 | 2.62 ± 0.08 |
| -165 | 6-1/2 | 6-11/16 | 3/32 | 6.487 ± 0.040 | .103 ± 0.003 | 164.77 ± 1.02 | 2.62 ± 0.08 |
| -166 | 6-3/4 | 6-15/16 | 3/32 | 6.737 ± 0.040 | .103 ± 0.003 | 171.12 ± 1.02 | 2.62 ± 0.08 |
| -167 | 7 | 7-3/16 | 3/32 | 6.987 ± 0.040 | .103 ± 0.003 | 177.47 ± 1.02 | 2.62 ± 0.08 |
| -168 | 7-1/4 | 7-7/16 | 3/32 | 7.237 ± 0.045 | .103 ± 0.003 | 183.82 ± 1.14 | 2.62 ± 0.08 |
| -169 | 7-1/2 | 7-11/16 | 3/32 | 7.487 ± 0.045 | .103 ± 0.003 | 190.17 ± 1.14 | 2.62 ± 0.08 |
| -170 | 7-3/4 | 7-15/16 | 3/32 | 7.737 ± 0.045 | .103 ± 0.003 | 196.52 ± 1.14 | 2.62 ± 0.08 |
| -171 | 8 | 8-3/16 | 3/32 | 7.987 ± 0.045 | .103 ± 0.003 | 202.87 ± 1.14 | 2.62 ± 0.08 |
| -172 | 8-1/4 | 8-7/16 | 3/32 | 8.237 ± 0.050 | .103 ± 0.003 | 209.22 ± 1.27 | 2.62 ± 0.08 |
| -173 | 8-1/2 | 8-11/16 | 3/32 | 8.487 ± 0.050 | .103 ± 0.003 | 215.57 ± 1.27 | 2.62 ± 0.08 |
| -174 | 8-3/4 | 8-15/16 | 3/32 | 8.737 ± 0.050 | .103 ± 0.003 | 221.92 ± 1.27 | 2.62 ± 0.08 |
| -175 | 9 | 9-3/16 | 3/32 | 8.987 ± 0.050 | .103 ± 0.003 | 228.27 ± 1.27 | 2.62 ± 0.08 |
| -176 | 9-1/4 | 9-7/16 | 3/32 | 9.237 ± 0.055 | .103 ± 0.003 | 234.62 ± 1.40 | 2.62 ± 0.08 |
| -177 | 9-1/2 | 9-11/16 | 3/32 | 9.487 ± 0.055 | .103 ± 0.003 | 240.97 ± 1.40 | 2.62 ± 0.08 |
| -178 | 9-3/4 | 9-15/16 | 3/32 | 9.737 ± 0.055 | .103 ± 0.003 | 247.32 ± 1.40 | 2.62 ± 0.08 |
O-rings with a nominal cross-section of 1/8" (-2##)
| Dash number | Nominal size in inches | Decimal size in inches | Decimal size in millimeters |
|---|
| | ID | OD | Cross-section | ID | Cross-section | ID | Cross-section |
|---|
| -201 | 3/16 | 7/16 | 1/8 | .171 ± 0.005 | .139 ± 0.004 | 4.34 ± 0.13 | 3.53 ± 0.10 |
| -202 | 1/4 | 1/2 | 1/8 | .234 ± 0.005 | .139 ± 0.004 | 5.94 ± 0.13 | 3.53 ± 0.10 |
| -203 | 5/16 | 9/16 | 1/8 | .296 ± 0.005 | .139 ± 0.004 | 7.52 ± 0.13 | 3.53 ± 0.10 |
| -204 | 3/8 | 5/8 | 1/8 | .359 ± 0.005 | .139 ± 0.004 | 9.12 ± 0.13 | 3.53 ± 0.10 |
| -205 | 7/16 | 11/16 | 1/8 | .421 ± 0.005 | .139 ± 0.004 | 10.69 ± 0.13 | 3.53 ± 0.10 |
| -206 | 1/2 | 3/4 | 1/8 | .484 ± 0.005 | .139 ± 0.004 | 12.29 ± 0.13 | 3.53 ± 0.10 |
| -207 | 9/16 | 13/16 | 1/8 | .546 ± 0.007 | .139 ± 0.004 | 13.87 ± 0.18 | 3.53 ± 0.10 |
| -208 | 5/8 | 7/8 | 1/8 | .609 ± 0.009 | .139 ± 0.004 | 15.47 ± 0.23 | 3.53 ± 0.10 |
| -209 | 11/16 | 15/16 | 1/8 | .671 ± 0.009 | .139 ± 0.004 | 17.04 ± 0.23 | 3.53 ± 0.10 |
| -210 | 3/4 | 1 | 1/8 | .734 ± 0.010 | .139 ± 0.004 | 18.64 ± 0.25 | 3.53 ± 0.10 |
| -211 | 13/16 | 1-1/16 | 1/8 | .796 ± 0.010 | .139 ± 0.004 | 20.22 ± 0.25 | 3.53 ± 0.10 |
| -212 | 7/8 | 1-1/8 | 1/8 | .859 ± 0.010 | .139 ± 0.004 | 21.82 ± 0.25 | 3.53 ± 0.10 |
| -213 | 15/16 | 1-3/16 | 1/8 | .921 ± 0.010 | .139 ± 0.004 | 23.39 ± 0.25 | 3.53 ± 0.10 |
| -214 | 1 | 1-1/4 | 1/8 | .984 ± 0.010 | .139 ± 0.004 | 24.99 ± 0.25 | 3.53 ± 0.10 |
| -215 | 1-1/16 | 1-5/16 | 1/8 | 1.046 ± 0.010 | .139 ± 0.004 | 26.57 ± 0.25 | 3.53 ± 0.10 |
| -216 | 1-1/8 | 1-3/8 | 1/8 | 1.109 ± 0.012 | .139 ± 0.004 | 28.17 ± 0.30 | 3.53 ± 0.10 |
| -217 | 1-3/16 | 1-7/16 | 1/8 | 1.171 ± 0.012 | .139 ± 0.004 | 29.74 ± 0.30 | 3.53 ± 0.10 |
| -218 | 1-1/4 | 1-1/2 | 1/8 | 1.234 ± 0.012 | .139 ± 0.004 | 31.34 ± 0.30 | 3.53 ± 0.10 |
| -219 | 1-5/16 | 1-9/16 | 1/8 | 1.296 ± 0.012 | .139 ± 0.004 | 32.92 ± 0.30 | 3.53 ± 0.10 |
| -220 | 1-3/8 | 1-5/8 | 1/8 | 1.359 ± 0.012 | .139 ± 0.004 | 34.52 ± 0.30 | 3.53 ± 0.10 |
| -221 | 1-7/16 | 1-11/16 | 1/8 | 1.421 ± 0.012 | .139 ± 0.004 | 36.09 ± 0.30 | 3.53 ± 0.10 |
| -222 | 1-1/2 | 1-3/4 | 1/8 | 1.484 ± 0.015 | .139 ± 0.004 | 37.69 ± 0.38 | 3.53 ± 0.10 |
| -223 | 1-5/8 | 1-7/8 | 1/8 | 1.609 ± 0.015 | .139 ± 0.004 | 40.87 ± 0.38 | 3.53 ± 0.10 |
| -224 | 1-3/4 | 2 | 1/8 | 1.734 ± 0.015 | .139 ± 0.004 | 44.04 ± 0.38 | 3.53 ± 0.10 |
| -225 | 1-7/8 | 2-1/8 | 1/8 | 1.859 ± 0.018 | .139 ± 0.004 | 47.22 ± 0.46 | 3.53 ± 0.10 |
| -226 | 2 | 2-1/4 | 1/8 | 1.984 ± 0.018 | .139 ± 0.004 | 50.39 ± 0.46 | 3.53 ± 0.10 |
| -227 | 2-1/8 | 2-3/8 | 1/8 | 2.109 ± 0.018 | .139 ± 0.004 | 53.57 ± 0.46 | 3.53 ± 0.10 |
| -228 | 2-1/4 | 2-1/2 | 1/8 | 2.234 ± 0.020 | .139 ± 0.004 | 56.74 ± 0.51 | 3.53 ± 0.10 |
| -229 | 2-3/8 | 2-5/8 | 1/8 | 2.359 ± 0.020 | .139 ± 0.004 | 59.92 ± 0.51 | 3.53 ± 0.10 |
| -230 | 2-1/2 | 2-3/4 | 1/8 | 2.484 ± 0.020 | .139 ± 0.004 | 63.09 ± 0.51 | 3.53 ± 0.10 |
| -231 | 2-5/8 | 2-7/8 | 1/8 | 2.609 ± 0.020 | .139 ± 0.004 | 66.27 ± 0.51 | 3.53 ± 0.10 |
| -232 | 2-3/4 | 3 | 1/8 | 2.734 ± 0.024 | .139 ± 0.004 | 69.44 ± 0.61 | 3.53 ± 0.10 |
| -233 | 2-7/8 | 3-1/8 | 1/8 | 2.859 ± 0.024 | .139 ± 0.004 | 72.62 ± 0.61 | 3.53 ± 0.10 |
| -234 | 3 | 3-1/4 | 1/8 | 2.984 ± 0.024 | .139 ± 0.004 | 75.79 ± 0.61 | 3.53 ± 0.10 |
| -235 | 3-1/8 | 3-3/8 | 1/8 | 3.109 ± 0.024 | .139 ± 0.004 | 78.97 ± 0.61 | 3.53 ± 0.10 |
| -236 | 3-1/4 | 3-1/2 | 1/8 | 3.234 ± 0.024 | .139 ± 0.004 | 82.14 ± 0.61 | 3.53 ± 0.10 |
| -237 | 3-3/8 | 3-5/8 | 1/8 | 3.359 ± 0.024 | .139 ± 0.004 | 85.32 ± 0.61 | 3.53 ± 0.10 |
| -238 | 3-1/2 | 3-3/4 | 1/8 | 3.484 ± 0.024 | .139 ± 0.004 | 88.49 ± 0.61 | 3.53 ± 0.10 |
| -239 | 3-5/8 | 3-7/8 | 1/8 | 3.609 ± 0.028 | .139 ± 0.004 | 91.67 ± 0.71 | 3.53 ± 0.10 |
| -240 | 3-3/4 | 4 | 1/8 | 3.734 ± 0.028 | .139 ± 0.004 | 94.84 ± 0.71 | 3.53 ± 0.10 |
| -241 | 3-7/8 | 4-1/8 | 1/8 | 3.859 ± 0.028 | .139 ± 0.004 | 98.02 ± 0.71 | 3.53 ± 0.10 |
| -242 | 4 | 4-1/4 | 1/8 | 3.984 ± 0.028 | .139 ± 0.004 | 101.19 ± 0.71 | 3.53 ± 0.10 |
| -243 | 4-1/8 | 4-3/8 | 1/8 | 4.109 ± 0.028 | .139 ± 0.004 | 104.37 ± 0.71 | 3.53 ± 0.10 |
| -244 | 4-1/4 | 4-1/2 | 1/8 | 4.234 ± 0.030 | .139 ± 0.004 | 107.54 ± 0.76 | 3.53 ± 0.10 |
| -245 | 4-3/8 | 4-5/8 | 1/8 | 4.359 ± 0.030 | .139 ± 0.004 | 110.72 ± 0.76 | 3.53 ± 0.10 |
| -246 | 4-1/2 | 4-3/4 | 1/8 | 4.484 ± 0.030 | .139 ± 0.004 | 113.89 ± 0.76 | 3.53 ± 0.10 |
| -247 | 4-5/8 | 4-7/8 | 1/8 | 4.609 ± 0.030 | .139 ± 0.004 | 117.07 ± 0.76 | 3.53 ± 0.10 |
| -248 | 4-3/4 | 5 | 1/8 | 4.734 ± 0.030 | .139 ± 0.004 | 120.24 ± 0.76 | 3.53 ± 0.10 |
| -249 | 4-7/8 | 5-1/8 | 1/8 | 4.859 ± 0.035 | .139 ± 0.004 | 123.42 ± 0.89 | 3.53 ± 0.10 |
| -250 | 5 | 5-1/4 | 1/8 | 4.984 ± 0.035 | .139 ± 0.004 | 126.59 ± 0.89 | 3.53 ± 0.10 |
| -251 | 5-1/8 | 5-3/8 | 1/8 | 5.109 ± 0.035 | .139 ± 0.004 | 129.77 ± 0.89 | 3.53 ± 0.10 |
| -252 | 5-1/4 | 5-1/2 | 1/8 | 5.234 ± 0.035 | .139 ± 0.004 | 132.94 ± 0.89 | 3.53 ± 0.10 |
| -253 | 5-3/8 | 5-5/8 | 1/8 | 5.359 ± 0.035 | .139 ± 0.004 | 136.12 ± 0.89 | 3.53 ± 0.10 |
| -254 | 5-1/2 | 5-3/4 | 1/8 | 5.484 ± 0.035 | .139 ± 0.004 | 139.29 ± 0.89 | 3.53 ± 0.10 |
| -255 | 5-5/8 | 5-7/8 | 1/8 | 5.609 ± 0.035 | .139 ± 0.004 | 142.47 ± 0.89 | 3.53 ± 0.10 |
| -256 | 5-3/4 | 6 | 1/8 | 5.734 ± 0.035 | .139 ± 0.004 | 145.64 ± 0.89 | 3.53 ± 0.10 |
| -257 | 5-7/8 | 6-1/8 | 1/8 | 5.859 ± 0.035 | .139 ± 0.004 | 148.82 ± 0.89 | 3.53 ± 0.10 |
| -258 | 6 | 6-1/4 | 1/8 | 5.984 ± 0.035 | .139 ± 0.004 | 151.99 ± 0.89 | 3.53 ± 0.10 |
| -259 | 6-1/4 | 6-1/2 | 1/8 | 6.234 ± 0.040 | .139 ± 0.004 | 158.34 ± 1.02 | 3.53 ± 0.10 |
| -260 | 6-1/2 | 6-3/4 | 1/8 | 6.484 ± 0.040 | .139 ± 0.004 | 164.69 ± 1.02 | 3.53 ± 0.10 |
| -261 | 6-3/4 | 7 | 1/8 | 6.734 ± 0.040 | .139 ± 0.004 | 171.04 ± 1.02 | 3.53 ± 0.10 |
| -262 | 7 | 7-1/4 | 1/8 | 6.984 ± 0.040 | .139 ± 0.004 | 177.39 ± 1.02 | 3.53 ± 0.10 |
| -263 | 7-1/4 | 7-1/2 | 1/8 | 7.234 ± 0.045 | .139 ± 0.004 | 183.74 ± 1.14 | 3.53 ± 0.10 |
| -264 | 7-1/2 | 7-3/4 | 1/8 | 7.484 ± 0.045 | .139 ± 0.004 | 190.09 ± 1.14 | 3.53 ± 0.10 |
| -265 | 7-3/4 | 8 | 1/8 | 7.734 ± 0.045 | .139 ± 0.004 | 196.44 ± 1.14 | 3.53 ± 0.10 |
| -266 | 8 | 8-1/4 | 1/8 | 7.984 ± 0.045 | .139 ± 0.004 | 202.79 ± 1.14 | 3.53 ± 0.10 |
| -267 | 8-1/4 | 8-1/2 | 1/8 | 8.234 ± 0.050 | .139 ± 0.004 | 209.14 ± 1.27 | 3.53 ± 0.10 |
| -268 | 8-1/2 | 8-3/4 | 1/8 | 8.484 ± 0.050 | .139 ± 0.004 | 215.49 ± 1.27 | 3.53 ± 0.10 |
| -269 | 8-3/4 | 9 | 1/8 | 8.734 ± 0.050 | .139 ± 0.004 | 221.84 ± 1.27 | 3.53 ± 0.10 |
| -270 | 9 | 9-1/4 | 1/8 | 8.984 ± 0.050 | .139 ± 0.004 | 228.19 ± 1.27 | 3.53 ± 0.10 |
| -271 | 9-1/4 | 9-1/2 | 1/8 | 9.234 ± 0.055 | .139 ± 0.004 | 234.54 ± 1.40 | 3.53 ± 0.10 |
| -272 | 9-1/2 | 9-3/4 | 1/8 | 9.484 ± 0.055 | .139 ± 0.004 | 240.89 ± 1.40 | 3.53 ± 0.10 |
| -273 | 9-3/4 | 10 | 1/8 | 9.734 ± 0.055 | .139 ± 0.004 | 247.24 ± 1.40 | 3.53 ± 0.10 |
| -274 | 10 | 10-1/4 | 1/8 | 9.984 ± 0.055 | .139 ± 0.004 | 253.59 ± 1.40 | 3.53 ± 0.10 |
| -275 | 10-1/2 | 10-3/4 | 1/8 | 10.484 ± 0.055 | .139 ± 0.004 | 266.29 ± 1.40 | 3.53 ± 0.10 |
| -276 | 11 | 11-1/4 | 1/8 | 10.984 ± 0.065 | .139 ± 0.004 | 278.99 ± 1.65 | 3.53 ± 0.10 |
| -277 | 11-1/2 | 11-3/4 | 1/8 | 11.484 ± 0.065 | .139 ± 0.004 | 291.69 ± 1.65 | 3.53 ± 0.10 |
| -278 | 12 | 12-1/4 | 1/8 | 11.984 ± 0.065 | .139 ± 0.004 | 304.39 ± 1.65 | 3.53 ± 0.10 |
| -279 | 13 | 13-1/4 | 1/8 | 12.984 ± 0.065 | .139 ± 0.004 | 329.79 ± 1.65 | 3.53 ± 0.10 |
| -280 | 14 | 14-1/4 | 1/8 | 13.984 ± 0.065 | .139 ± 0.004 | 355.19 ± 1.65 | 3.53 ± 0.10 |
| -281 | 15 | 15-1/4 | 1/8 | 14.984 ± 0.065 | .139 ± 0.004 | 380.59 ± 1.65 | 3.53 ± 0.10 |
| -282 | 16 | 16-1/4 | 1/8 | 15.955 ± 0.075 | .139 ± 0.004 | 405.26 ± 1.91 | 3.53 ± 0.10 |
| -283 | 17 | 17-1/4 | 1/8 | 16.955 ± 0.080 | .139 ± 0.004 | 430.66 ± 2.03 | 3.53 ± 0.10 |
| -284 | 18 | 18-1/4 | 1/8 | 17.955 ± 0.085 | .139 ± 0.004 | 456.06 ± 2.16 | 3.53 ± 0.10 |
O-rings with a nominal cross-section of 3/16" (-3##)
| Dash number | Nominal size in inches | Decimal size in inches | Decimal size in millimeters |
|---|
| | ID | OD | Cross-section | ID | Cross-section | ID | Cross-section |
|---|
| -309 | 7/16 | 13/16 | 3/16 | .412 ± 0.005 | .210 ± 0.005 | 10.46 ± 0.13 | 5.33 ± 0.13 |
| -310 | 1/2 | 7/8 | 3/16 | .475 ± 0.005 | .210 ± 0.005 | 12.07 ± 0.13 | 5.33 ± 0.13 |
| -311 | 9/16 | 15-16 | 3/16 | .537 ± 0.007 | .210 ± 0.005 | 13.64 ± 0.18 | 5.33 ± 0.13 |
| -312 | 5/8 | 1 | 3/16 | .600 ± 0.009 | .210 ± 0.005 | 15.24 ± 0.23 | 5.33 ± 0.13 |
| -313 | 11/16 | 1-1/16 | 3/16 | .662 ± 0.009 | .210 ± 0.005 | 16.81 ± 0.23 | 5.33 ± 0.13 |
| -314 | 3/4 | 1-1/8 | 3/16 | .725 ± 0.010 | .210 ± 0.005 | 18.42 ± 0.25 | 5.33 ± 0.13 |
| -315 | 13/16 | 1-3/16 | 3/16 | .787 ± 0.010 | .210 ± 0.005 | 19.99 ± 0.25 | 5.33 ± 0.13 |
| -316 | 7/8 | 1-1/4 | 3/16 | .850 ± 0.010 | .210 ± 0.005 | 21.59 ± 0.25 | 5.33 ± 0.13 |
| -317 | 15/16 | 1-5/16 | 3/16 | .912 ± 0.010 | .210 ± 0.005 | 23.16 ± 0.25 | 5.33 ± 0.13 |
| -318 | 1 | 1-3/8 | 3/16 | .975 ± 0.010 | .210 ± 0.005 | 24.77 ± 0.25 | 5.33 ± 0.13 |
| -319 | 1-1/16 | 1-7/16 | 3/16 | 1.037 ± 0.010 | .210 ± 0.005 | 26.34 ± 0.25 | 5.33 ± 0.13 |
| -320 | 1-1/8 | 1-1/2 | 3/16 | 1.100 ± 0.012 | .210 ± 0.005 | 27.94 ± 0.30 | 5.33 ± 0.13 |
| -321 | 1-3/16 | 1-9/16 | 3/16 | 1.162 ± 0.012 | .210 ± 0.005 | 29.51 ± 0.30 | 5.33 ± 0.13 |
| -322 | 1-1/4 | 1-5/8 | 3/16 | 1.225 ± 0.012 | .210 ± 0.005 | 31.12 ± 0.30 | 5.33 ± 0.13 |
| -323 | 1-5/16 | 1-11/16 | 3/16 | 1.287 ± 0.012 | .210 ± 0.005 | 32.69 ± 0.30 | 5.33 ± 0.13 |
| -324 | 1-3/8 | 1-3/4 | 3/16 | 1.350 ± 0.012 | .210 ± 0.005 | 34.29 ± 0.30 | 5.33 ± 0.13 |
| -325 | 1-1/2 | 1-7/8 | 3/16 | 1.475 ± 0.015 | .210 ± 0.005 | 37.47 ± 0.38 | 5.33 ± 0.13 |
| -326 | 1-5/8 | 2 | 3/16 | 1.600 ± 0.015 | .210 ± 0.005 | 40.64 ± 0.38 | 5.33 ± 0.13 |
| -327 | 1-3/4 | 2-1/8 | 3/16 | 1.725 ± 0.015 | .210 ± 0.005 | 43.82 ± 0.38 | 5.33 ± 0.13 |
| -328 | 1-7/8 | 2-1/4 | 3/16 | 1.850 ± 0.015 | .210 ± 0.005 | 46.99 ± 0.38 | 5.33 ± 0.13 |
| -329 | 2 | 2-3/8 | 3/16 | 1.975 ± 0.018 | .210 ± 0.005 | 50.17 ± 0.46 | 5.33 ± 0.13 |
| -330 | 2-1/8 | 2-1/2 | 3/16 | 2.100 ± 0.018 | .210 ± 0.005 | 53.34 ± 0.46 | 5.33 ± 0.13 |
| -331 | 2-1/4 | 2-5/8 | 3/16 | 2.225 ± 0.018 | .210 ± 0.005 | 56.52 ± 0.46 | 5.33 ± 0.13 |
| -332 | 2-3/8 | 2-3/4 | 3/16 | 2.350 ± 0.018 | .210 ± 0.005 | 59.69 ± 0.46 | 5.33 ± 0.13 |
| -333 | 2-1/2 | 2-7/8 | 3/16 | 2.475 ± 0.020 | .210 ± 0.005 | 62.87 ± 0.51 | 5.33 ± 0.13 |
| -334 | 2-5/8 | 3 | 3/16 | 2.600 ± 0.020 | .210 ± 0.005 | 66.04 ± 0.51 | 5.33 ± 0.13 |
| -335 | 2-3/4 | 3-1/8 | 3/16 | 2.725 ± 0.020 | .210 ± 0.005 | 69.22 ± 0.51 | 5.33 ± 0.13 |
| -336 | 2-7/8 | 3-1/4 | 3/16 | 2.850 ± 0.020 | .210 ± 0.005 | 72.39 ± 0.51 | 5.33 ± 0.13 |
| -337 | 3 | 3-3/8 | 3/16 | 2.975 ± 0.024 | .210 ± 0.005 | 75.57 ± 0.61 | 5.33 ± 0.13 |
| -338 | 3-1/8 | 3-1/2 | 3/16 | 3.100 ± 0.024 | .210 ± 0.005 | 78.74 ± 0.61 | 5.33 ± 0.13 |
| -339 | 3-1/4 | 3-5/8 | 3/16 | 3.225 ± 0.024 | .210 ± 0.005 | 81.92 ± 0.61 | 5.33 ± 0.13 |
| -340 | 3-3/8 | 3-3/4 | 3/16 | 3.350 ± 0.024 | .210 ± 0.005 | 85.09 ± 0.61 | 5.33 ± 0.13 |
| -341 | 3-1/2 | 3-7/8 | 3/16 | 3.475 ± 0.024 | .210 ± 0.005 | 88.27 ± 0.61 | 5.33 ± 0.13 |
| -342 | 3-5/8 | 4 | 3/16 | 3.600 ± 0.028 | .210 ± 0.005 | 91.44 ± 0.71 | 5.33 ± 0.13 |
| -343 | 3-3/4 | 4-1/8 | 3/16 | 3.725 ± 0.028 | .210 ± 0.005 | 94.62 ± 0.71 | 5.33 ± 0.13 |
| -344 | 3-7/8 | 4-1/4 | 3/16 | 3.850 ± 0.028 | .210 ± 0.005 | 97.79 ± 0.71 | 5.33 ± 0.13 |
| -345 | 4 | 4-3/8 | 3/16 | 3.975 ± 0.028 | .210 ± 0.005 | 100.97 ± 0.71 | 5.33 ± 0.13 |
| -346 | 4-1/8 | 4-1/2 | 3/16 | 4.100 ± 0.028 | .210 ± 0.005 | 104.14 ± 0.71 | 5.33 ± 0.13 |
| -347 | 4-1/4 | 4-5/8 | 3/16 | 4.225 ± 0.030 | .210 ± 0.005 | 107.32 ± 0.76 | 5.33 ± 0.13 |
| -348 | 4-3/8 | 4-3/4 | 3/16 | 4.350 ± 0.030 | .210 ± 0.005 | 110.49 ± 0.76 | 5.33 ± 0.13 |
| -349 | 4-1/2 | 4-7/8 | 3/16 | 4.475 ± 0.030 | .210 ± 0.005 | 113.67 ± 0.76 | 5.33 ± 0.13 |
| -350 | 4-5/8 | 5 | 3/16 | 4.600 ± 0.030 | .210 ± 0.005 | 116.84 ± 0.76 | 5.33 ± 0.13 |
| -351 | 4-3/4 | 5-1/8 | 3/16 | 4.725 ± 0.030 | .210 ± 0.005 | 120.02 ± 0.76 | 5.33 ± 0.13 |
| -352 | 4-7/8 | 5-1/4 | 3/16 | 4.850 ± 0.030 | .210 ± 0.005 | 123.19 ± 0.76 | 5.33 ± 0.13 |
| -353 | 5 | 5-3/8 | 3/16 | 4.975 ± 0.037 | .210 ± 0.005 | 126.37 ± 0.94 | 5.33 ± 0.13 |
| -354 | 5-1/8 | 5-1/2 | 3/16 | 5.100 ± 0.037 | .210 ± 0.005 | 129.54 ± 0.94 | 5.33 ± 0.13 |
| -355 | 5-1/4 | 5-5/8 | 3/16 | 5.225 ± 0.037 | .210 ± 0.005 | 132.72 ± 0.94 | 5.33 ± 0.13 |
| -356 | 5-3/8 | 5-3/4 | 3/16 | 5.350 ± 0.037 | .210 ± 0.005 | 135.89 ± 0.94 | 5.33 ± 0.13 |
| -357 | 5-1/2 | 5-7/8 | 3/16 | 5.475 ± 0.037 | .210 ± 0.005 | 139.07 ± 0.94 | 5.33 ± 0.13 |
| -358 | 5-5/8 | 6 | 3/16 | 5.600 ± 0.037 | .210 ± 0.005 | 142.24 ± 0.94 | 5.33 ± 0.13 |
| -359 | 5-3/4 | 6-1/8 | 3/16 | 5.725 ± 0.037 | .210 ± 0.005 | 145.42 ± 0.94 | 5.33 ± 0.13 |
| -360 | 5-7/8 | 6-1/4 | 3/16 | 5.850 ± 0.037 | .210 ± 0.005 | 148.59 ± 0.94 | 5.33 ± 0.13 |
| -361 | 6 | 6-3/8 | 3/16 | 5.975 ± 0.037 | .210 ± 0.005 | 151.77 ± 0.94 | 5.33 ± 0.13 |
| -362 | 6-1/4 | 6-5/8 | 3/16 | 6.225 ± 0.040 | .210 ± 0.005 | 158.12 ± 1.02 | 5.33 ± 0.13 |
| -363 | 6-1/2 | 6-7/8 | 3/16 | 6.475 ± 0.040 | .210 ± 0.005 | 164.47 ± 1.02 | 5.33 ± 0.13 |
| -364 | 6-3/4 | 7-1/8 | 3/16 | 6.725 ± 0.040 | .210 ± 0.005 | 170.82 ± 1.02 | 5.33 ± 0.13 |
| -365 | 7 | 7-3/8 | 3/16 | 6.975 ± 0.040 | .210 ± 0.005 | 177.17 ± 1.02 | 5.33 ± 0.13 |
| -366 | 7-1/4 | 7-5/8 | 3/16 | 7.225 ± 0.045 | .210 ± 0.005 | 183.52 ± 1.14 | 5.33 ± 0.13 |
| -367 | 7-1/2 | 7-7/8 | 3/16 | 7.475 ± 0.045 | .210 ± 0.005 | 189.87 ± 1.14 | 5.33 ± 0.13 |
| -368 | 7-3/4 | 8-1/8 | 3/16 | 7.725 ± 0.045 | .210 ± 0.005 | 196.22 ± 1.14 | 5.33 ± 0.13 |
| -369 | 8 | 8-3/8 | 3/16 | 7.975 ± 0.045 | .210 ± 0.005 | 202.57 ± 1.14 | 5.33 ± 0.13 |
| -370 | 8-1/4 | 8-5/8 | 3/16 | 8.225 ± 0.050 | .210 ± 0.005 | 208.92 ± 1.27 | 5.33 ± 0.13 |
| -371 | 8-1/2 | 8-7/8 | 3/16 | 8.475 ± 0.050 | .210 ± 0.005 | 215.27 ± 1.27 | 5.33 ± 0.13 |
| -372 | 8-3/4 | 9-1/8 | 3/16 | 8.725 ± 0.050 | .210 ± 0.005 | 221.62 ± 1.27 | 5.33 ± 0.13 |
| -373 | 9 | 9-3/8 | 3/16 | 8.975 ± 0.050 | .210 ± 0.005 | 227.97 ± 1.27 | 5.33 ± 0.13 |
| -374 | 9-1/4 | 9-5/8 | 3/16 | 9.225 ± 0.055 | .210 ± 0.005 | 234.32 ± 1.40 | 5.33 ± 0.13 |
| -375 | 9-1/2 | 9-7/8 | 3/16 | 9.475 ± 0.055 | .210 ± 0.005 | 240.67 ± 1.40 | 5.33 ± 0.13 |
| -376 | 9-3/4 | 10-1/8 | 3/16 | 9.725 ± 0.055 | .210 ± 0.005 | 247.02 ± 1.40 | 5.33 ± 0.13 |
| -377 | 10 | 10-3/8 | 3/16 | 9.975 ± 0.055 | .210 ± 0.005 | 253.37 ± 1.40 | 5.33 ± 0.13 |
| -378 | 10-1/2 | 10-7/8 | 3/16 | 10.475 ± 0.060 | .210 ± 0.005 | 266.07 ± 1.52 | 5.33 ± 0.13 |
| -379 | 11 | 11-3/8 | 3/16 | 10.975 ± 0.060 | .210 ± 0.005 | 278.77 ± 1.52 | 5.33 ± 0.13 |
| -380 | 11-1/2 | 11-7/8 | 3/16 | 11.475 ± 0.065 | .210 ± 0.005 | 291.47 ± 1.65 | 5.33 ± 0.13 |
| -381 | 12 | 12-3/8 | 3/16 | 11.975 ± 0.065 | .210 ± 0.005 | 304.17 ± 1.65 | 5.33 ± 0.13 |
| -382 | 13 | 13-3/8 | 3/16 | 12.975 ± 0.065 | .210 ± 0.005 | 329.57 ± 1.65 | 5.33 ± 0.13 |
| -383 | 14 | 14-3/8 | 3/16 | 13.975 ± 0.070 | .210 ± 0.005 | 354.97 ± 1.78 | 5.33 ± 0.13 |
| -384 | 15 | 15-3/8 | 3/16 | 14.975 ± 0.070 | .210 ± 0.005 | 380.37 ± 1.78 | 5.33 ± 0.13 |
| -385 | 16 | 16-3/8 | 3/16 | 15.955 ± 0.075 | .210 ± 0.005 | 405.26 ± 1.91 | 5.33 ± 0.13 |
| -386 | 17 | 17-3/8 | 3/16 | 16.955 ± 0.080 | .210 ± 0.005 | 430.66 ± 2.03 | 5.33 ± 0.13 |
| -387 | 18 | 18-3/8 | 3/16 | 17.955 ± 0.085 | .210 ± 0.005 | 456.06 ± 2.16 | 5.33 ± 0.13 |
| -388 | 19 | 19-3/8 | 3/16 | 18.955 ± 0.090 | .210 ± 0.005 | 481.46 ± 2.29 | 5.33 ± 0.13 |
| -389 | 20 | 20-3/8 | 3/16 | 19.955 ± 0.095 | .210 ± 0.005 | 506.86 ± 2.41 | 5.33 ± 0.13 |
| -390 | 21 | 21-3/8 | 3/16 | 20.955 ± 0.095 | .210 ± 0.005 | 532.26 ± 2.41 | 5.33 ± 0.13 |
| -391 | 22 | 22-3/8 | 3/16 | 21.955 ± 0.100 | .210 ± 0.005 | 557.66 ± 2.54 | 5.33 ± 0.13 |
| -392 | 23 | 23-3/8 | 3/16 | 22.940 ± 0.105 | .210 ± 0.005 | 582.68 ± 2.67 | 5.33 ± 0.13 |
| -393 | 24 | 24-3/8 | 3/16 | 23.940 ± 0.110 | .210 ± 0.005 | 608.08 ± 2.79 | 5.33 ± 0.13 |
| -394 | 25 | 25-3/8 | 3/16 | 24.940 ± 0.115 | .210 ± 0.005 | 633.48 ± 2.92 | 5.33 ± 0.13 |
| -395 | 26 | 26-3/8 | 3/16 | 25.940 ± 0.120 | .210 ± 0.005 | 658.88 ± 3.05 | 5.33 ± 0.13 |
O-rings with a nominal cross-section of 1/4" (-4##)
| Dash number | Nominal size in inches | Decimal size in inches | Decimal size in millimeters |
|---|
| | ID | OD | Cross-section | ID | Cross-section | ID | Cross-section |
|---|
| -425 | 4-1/2 | 5 | 1/4 | 4.475 ± 0.033 | .275 ± 0.006 | 113.67 ± 0.84 | 6.99 ± 0.15 |
| -426 | 4-5/8 | 5-1/8 | 1/4 | 4.600 ± 0.033 | .275 ± 0.006 | 116.84 ± 0.84 | 6.99 ± 0.15 |
| -427 | 4-3/4 | 5-1/4 | 1/4 | 4.725 ± 0.033 | .275 ± 0.006 | 120.02 ± 0.84 | 6.99 ± 0.15 |
| -428 | 4-7/8 | 5-3/8 | 1/4 | 4.850 ± 0.033 | .275 ± 0.006 | 123.19 ± 0.84 | 6.99 ± 0.15 |
| -429 | 5 | 5-1/2 | 1/4 | 4.975 ± 0.037 | .275 ± 0.006 | 126.37 ± 0.94 | 6.99 ± 0.15 |
| -430 | 5-1/8 | 5-5/8 | 1/4 | 5.100 ± 0.037 | .275 ± 0.006 | 129.54 ± 0.94 | 6.99 ± 0.15 |
| -431 | 5-1/4 | 5-3/4 | 1/4 | 5.225 ± 0.037 | .275 ± 0.006 | 132.72 ± 0.94 | 6.99 ± 0.15 |
| -432 | 5-3/8 | 5-7/8 | 1/4 | 5.350 ± 0.037 | .275 ± 0.006 | 135.89 ± 0.94 | 6.99 ± 0.15 |
| -433 | 5-1/2 | 6 | 1/4 | 5.475 ± 0.037 | .275 ± 0.006 | 139.07 ± 0.94 | 6.99 ± 0.15 |
| -434 | 5-5/8 | 6-1/8 | 1/4 | 5.600 ± 0.037 | .275 ± 0.006 | 142.24 ± 0.94 | 6.99 ± 0.15 |
| -435 | 5-3/4 | 6-1/4 | 1/4 | 5.725 ± 0.037 | .275 ± 0.006 | 145.42 ± 0.94 | 6.99 ± 0.15 |
| -436 | 5-7/8 | 6-3/8 | 1/4 | 5.850 ± 0.037 | .275 ± 0.006 | 148.59 ± 0.94 | 6.99 ± 0.15 |
| -437 | 6 | 6-1/2 | 1/4 | 5.975 ± 0.037 | .275 ± 0.006 | 151.77 ± 0.94 | 6.99 ± 0.15 |
| -438 | 6-1/4 | 6-3/4 | 1/4 | 6.225 ± 0.040 | .275 ± 0.006 | 158.12 ± 1.02 | 6.99 ± 0.15 |
| -439 | 6-1/2 | 7 | 1/4 | 6.475 ± 0.040 | .275 ± 0.006 | 164.47 ± 1.02 | 6.99 ± 0.15 |
| -440 | 6-3/4 | 7-1/4 | 1/4 | 6.725 ± 0.040 | .275 ± 0.006 | 170.82 ± 1.02 | 6.99 ± 0.15 |
| -441 | 7 | 7-1/2 | 1/4 | 6.975 ± 0.040 | .275 ± 0.006 | 177.17 ± 1.02 | 6.99 ± 0.15 |
| -442 | 7-1/4 | 7-3/4 | 1/4 | 7.225 ± 0.045 | .275 ± 0.006 | 183.52 ± 1.14 | 6.99 ± 0.15 |
| -443 | 7-1/2 | 8 | 1/4 | 7.475 ± 0.045 | .275 ± 0.006 | 189.87 ± 1.14 | 6.99 ± 0.15 |
| -444 | 7-3/4 | 8-1/4 | 1/4 | 7.725 ± 0.045 | .275 ± 0.006 | 196.22 ± 1.14 | 6.99 ± 0.15 |
| -445 | 8 | 8-1/2 | 1/4 | 7.975 ± 0.045 | .275 ± 0.006 | 202.57 ± 1.14 | 6.99 ± 0.15 |
| -446 | 8-1/2 | 9 | 1/4 | 8.475 ± 0.055 | .275 ± 0.006 | 215.27 ± 1.40 | 6.99 ± 0.15 |
| -447 | 9 | 9-1/2 | 1/4 | 8.975 ± 0.055 | .275 ± 0.006 | 227.97 ± 1.40 | 6.99 ± 0.15 |
| -448 | 9-1/2 | 10 | 1/4 | 9.475 ± 0.055 | .275 ± 0.006 | 240.67 ± 1.40 | 6.99 ± 0.15 |
| -449 | 10 | 10-1/2 | 1/4 | 9.975 ± 0.055 | .275 ± 0.006 | 253.37 ± 1.40 | 6.99 ± 0.15 |
| -450 | 10-1/2 | 11 | 1/4 | 10.475 ± 0.060 | .275 ± 0.006 | 266.07 ± 1.52 | 6.99 ± 0.15 |
| -451 | 11 | 11-1/2 | 1/4 | 10.975 ± 0.060 | .275 ± 0.006 | 278.77 ± 1.52 | 6.99 ± 0.15 |
| -452 | 11-1/2 | 12 | 1/4 | 11.475 ± 0.060 | .275 ± 0.006 | 291.47 ± 1.52 | 6.99 ± 0.15 |
| -453 | 12 | 12-1/2 | 1/4 | 11.975 ± 0.060 | .275 ± 0.006 | 304.17 ± 1.52 | 6.99 ± 0.15 |
| -454 | 12-1/2 | 13 | 1/4 | 12.475 ± 0.060 | .275 ± 0.006 | 316.87 ± 1.52 | 6.99 ± 0.15 |
| -455 | 13 | 13-1/2 | 1/4 | 12.975 ± 0.060 | .275 ± 0.006 | 329.57 ± 1.52 | 6.99 ± 0.15 |
| -456 | 13-1/2 | 14 | 1/4 | 13.475 ± 0.070 | .275 ± 0.006 | 342.27 ± 1.78 | 6.99 ± 0.15 |
| -457 | 14 | 14-1/2 | 1/4 | 13.975 ± 0.070 | .275 ± 0.006 | 354.97 ± 1.78 | 6.99 ± 0.15 |
| -458 | 14-1/2 | 15 | 1/4 | 14.475 ± 0.070 | .275 ± 0.006 | 367.67 ± 1.78 | 6.99 ± 0.15 |
| -459 | 15 | 15-1/2 | 1/4 | 14.975 ± 0.070 | .275 ± 0.006 | 380.37 ± 1.78 | 6.99 ± 0.15 |
| -460 | 15-1/2 | 16 | 1/4 | 15.475 ± 0.070 | .275 ± 0.006 | 393.07 ± 1.78 | 6.99 ± 0.15 |
| -461 | 16 | 16-1/2 | 1/4 | 15.955 ± 0.075 | .275 ± 0.006 | 405.26 ± 1.91 | 6.99 ± 0.15 |
| -462 | 16-1/2 | 17 | 1/4 | 16.455 ± 0.075 | .275 ± 0.006 | 417.96 ± 1.91 | 6.99 ± 0.15 |
| -463 | 17 | 17-1/2 | 1/4 | 16.955 ± 0.080 | .275 ± 0.006 | 430.66 ± 2.03 | 6.99 ± 0.15 |
| -464 | 17-1/2 | 18 | 1/4 | 17.455 ± 0.085 | .275 ± 0.006 | 443.36 ± 2.16 | 6.99 ± 0.15 |
| -465 | 18 | 18-1/2 | 1/4 | 17.955 ± 0.085 | .275 ± 0.006 | 456.06 ± 2.16 | 6.99 ± 0.15 |
| -466 | 18-1/2 | 19 | 1/4 | 18.455 ± 0.085 | .275 ± 0.006 | 468.76 ± 2.16 | 6.99 ± 0.15 |
| -467 | 19 | 19-1/2 | 1/4 | 18.955 ± 0.090 | .275 ± 0.006 | 481.46 ± 2.29 | 6.99 ± 0.15 |
| -468 | 19-1/2 | 20 | 1/4 | 19.455 ± 0.090 | .275 ± 0.006 | 494.16 ± 2.29 | 6.99 ± 0.15 |
| -469 | 20 | 20-1/2 | 1/4 | 19.955 ± 0.095 | .275 ± 0.006 | 506.86 ± 2.41 | 6.99 ± 0.15 |
| -470 | 21 | 21-1/2 | 1/4 | 20.955 ± 0.095 | .275 ± 0.006 | 532.26 ± 2.41 | 6.99 ± 0.15 |
| -471 | 22 | 22-1/2 | 1/4 | 21.955 ± 0.100 | .275 ± 0.006 | 557.66 ± 2.54 | 6.99 ± 0.15 |
| -472 | 23 | 23-1/2 | 1/4 | 22.940 ± 0.105 | .275 ± 0.006 | 582.68 ± 2.67 | 6.99 ± 0.15 |
| -473 | 24 | 24-1/2 | 1/4 | 23.940 ± 0.110 | .275 ± 0.006 | 608.08 ± 2.79 | 6.99 ± 0.15 |
| -474 | 25 | 25-1/2 | 1/4 | 24.940 ± 0.115 | .275 ± 0.006 | 633.48 ± 2.92 | 6.99 ± 0.15 |
| -475 | 26 | 26-1/2 | 1/4 | 25.940 ± 0.120 | .275 ± 0.006 | 658.88 ± 3.05 | 6.99 ± 0.15 |
-9## o-rings
| Dash number | Decimal size in inches | Decimal size in millimeters |
|---|
| | ID | Cross-section | ID | Cross-section |
|---|
| -901 | .185 ± 0.005 | .056 ± 0.003 | 4.70 ± 0.13 | 1.42 ± 0.08 |
| -902 | .239 ± 0.005 | .064 ± 0.003 | 6.07 ± 0.13 | 1.63 ± 0.08 |
| -903 | .301 ± 0.005 | .064 ± 0.003 | 7.65 ± 0.13 | 1.63 ± 0.08 |
| -904 | .351 ± 0.005 | .072 ± 0.003 | 8.92 ± 0.13 | 1.83 ± 0.08 |
| -905 | .414 ± 0.005 | .072 ± 0.003 | 10.52 ± 0.13 | 1.83 ± 0.08 |
| -906 | .468 ± 0.005 | .078 ± 0.003 | 11.89 ± 0.13 | 1.98 ± 0.08 |
| -907 | .530 ± 0.007 | .082 ± 0.003 | 13.46 ± 0.18 | 2.08 ± 0.08 |
| -908 | .644 ± 0.009 | .087 ± 0.003 | 16.36 ± 0.23 | 2.21 ± 0.08 |
| -909 | .706 ± 0.009 | .097 ± 0.003 | 17.93 ± 0.23 | 2.46 ± 0.08 |
| -910 | .755 ± 0.009 | .097 ± 0.003 | 19.18 ± 0.23 | 2.46 ± 0.08 |
| -911 | .863 ± 0.009 | .116 ± 0.004 | 21.92 ± 0.23 | 2.95 ± 0.10 |
| -912 | .924 ± 0.009 | .116 ± 0.004 | 23.47 ± 0.23 | 2.95 ± 0.10 |
| -913 | .986 ± 0.010 | .116 ± 0.004 | 25.04 ± 0.25 | 2.95 ± 0.10 |
| -914 | 1.047 ± 0.010 | .116 ± 0.004 | 26.59 ± 0.25 | 2.95 ± 0.10 |
| -916 | 1.171 ± 0.010 | .116 ± 0.004 | 29.74 ± 0.25 | 2.95 ± 0.10 |
| -918 | 1.355 ± 0.012 | .116 ± 0.004 | 34.42 ± 0.30 | 2.95 ± 0.10 |
| -920 | 1.475 ± 0.014 | .118 ± 0.004 | 37.47 ± 0.36 | 3.00 ± 0.10 |
| -924 | 1.720 ± 0.014 | .118 ± 0.004 | 43.69 ± 0.36 | 3.00 ± 0.10 |
| -928 | 2.090 ± 0.018 | .118 ± 0.004 | 53.09 ± 0.46 | 3.00 ± 0.10 |
| -932 | 2.338 ± 0.019 | .118 ± 0.004 | 59.37 ± 0.47 | 3.00 ± 0.10 |