Rubber O-Ring Temperature Ranges
This chart provides the high and low-temperature ranges for popular rubber materials. The closer you go to the limit of your rubber’s temperature range, the faster your material will degrade. The O-rings' temperature range is determined by the base elastomer used. This chart depicts the maximum temperature range for each elastomer. The temperature range for a specific compound may not reach these maximum limits. Higher temperatures may be considered if exposure to the o-ring is short or intermittent.
Material |
Low end Operating Temperature |
High end |
Aflas® |
25°F |
450°F |
Buna-N - Nitrile |
-30°F |
250°F |
EPDM |
-40°F |
300°F |
FFKM (Perfluoroelastomer) |
0°F |
500°F |
Fluorosilicone |
-60°F |
350°F |
HNBR |
-20°F |
300°F |
Neoprene® |
-30°F |
212°F |
Nitrile - Buna-N |
-30°F |
250°F |
Polyacrylate |
-10°F |
300°F |
Polyurethane |
-40°F |
175°F |
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Silicone CLR |
-60°F |
430°F |
Silicone GP |
-60°F |
400°F |
Silicone LSR |
-60°F |
400°F |
Viton® |
-10°F |
400°F |