Material Summary

Nitrile (NBR, -40 to 120*C, Standard Rubber, Most Commonly Used O-Ring)

HSN (HNBR, -40*C to 160*C, Sour Service)

FKM (Viton, -25*C to 204*C, Used in Fuel and Chemical Service)

PEEK (-70*C to 260*C, High Pressure Resistance, Often Used As A Backup)

PTFE (Teflon, -200*C to 250*C, Not good for Flourine, Molten Metal or Strong Oxidizers)

Silicone (-65*C to 232*C, Used in most Food Grade Applications)