O-ring cross reference
Here is a bunch of O-ring reference information to help you find what you are looking for.
- AS 568 A O-ring standard specifications (inch)
- BS 1806 O-ring standard specifications (inch)
- BS 4518 O-ring standard specifications (metric)
- DIN 3771 O-ring standard specifications (metric)
- ISO 3601-1 O-ring standard specifications (inch and metric)
- JIS B 2401 O-ring standard specifications (metric)
- Metric O-ring system
- NF T 47-501 O-ring standard specifications (metric)
- SMS 1586 O-ring standard specifications (metric)
- UNI O-ring standard specifications (metric)
O-ring material
Updated: 2008 Feb 29
O-rings are available in many other materials than the two listed below. But, Buna-N and Viton will suffice very nicely in the vast majority of motorcycle applications.
Buna-N
Buna-N has good oil resistance and has been used for years in the automotive world. Buna-N is inexpensive and readily available. Buna-N O-rings with a Shore Durometer (A Scale) = 70 generally work very well in motorcycle applications.
