O-Ring Colors

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 o-ring_black Nitrile (Buna-N, NBR), Viton (FKM), EPDM, Neoprene (Chloroprene), HNBR (Hydrogenated Nitrile Butadiene Rubber) N70 | N90 | V75 | V90 | HNBR90
Brown o-ring_brown Viton (FKM) BV75 | BV90
White o-ring_white Nitrile (Buna-N, NBR), any FDA compound WN70
Green o-ring_green HSN/HNBR (Highly Saturated Nitrile or Hydrogenated Nitrile Butadiene Rubber) HSN70 Green
Blue o-ring_blue Fluorosilicone F70
Red/Orange/Rust o-ring_red Silicone S70
Clear o-ring_clear Polyurethane (Urethane) U70 | U90