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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
|Color||Image||Most Common Compounds||Global Compounds|
|Black||Nitrile (Buna-N, NBR), Viton (FKM), EPDM, Neoprene (Chloroprene), HNBR (Hydrogenated Nitrile Butadiene Rubber)||N70 | N90 | V75 | V90 | HNBR90|
|Brown||Viton (FKM)||BV75 | BV90|
|White||Nitrile (Buna-N, NBR), any FDA compound||WN70|
|Green||HSN/HNBR (Highly Saturated Nitrile or Hydrogenated Nitrile Butadiene Rubber)||HSN70 Green|
|Clear||Polyurethane (Urethane)||U70 | U90|