Over time and in certain industries, specific o-ring colors have been used to easily, visually identify what type of o-ring is being used.
The chart below shows the standard colors that Global O-Ring stocks in our most common materials/compounds. Please note that we can supply ANY O-RING IN ANY COLOR.
**Disclaimer: It is never safe to assume an o-ring is a certain type, material, or hardness just based on the color alone.**
Global O-ring Stock Color Chart
|| Nitrile (Buna-N, NBR), Viton (FKM), EPDM, Neoprene (Chloroprene), HNBR (Hydrogenated Nitrile Butadiene Rubber)
||N70 | N90 | V75 | V90 | HNBR90
||BV75 | BV90
||Nitrile (Buna-N, NBR), any FDA compound
||HSN/HNBR (Highly Saturated Nitrile or Hydrogenated Nitrile Butadiene Rubber)
||U70 | U90