Aerospace systems operate under some of the most demanding conditions on Earth—and beyond. O-Rings in aerospace applications must provide long-term, fail-safe sealing under extreme temperatures, pressures, and chemical exposures. Reliability is critical for safety, performance, and compliance with rigorous industry standards.
|
Material |
Temperature Range (°C) |
Key Properties |
Applications |
|
FFKM |
-15 to +327 |
Extreme thermal/chemical resistance, low outgassing |
Spacecraft, jet engines, critical avionics |
|
FKM |
-40 to +225 |
Fuel resistance, low-temp aerospace grades |
Fuel systems, actuators, engines |
|
Silicone |
-60 to +230 |
Excellent flexibility at extreme temperatures |
Cabin seals, sensors, pressurized cabins |
|
FVMQ |
-70 to +200 |
Jet fuel + low temp resistance |
Fuel systems, instrumentation, control lines |
|
EPDM (Aerospace grade) |
-55 to +150 |
Hot water, steam, and phosphate ester fluid resistant |
Hydraulic systems (Skydrol), oxygen systems |
|
HNBR |
-40 to +150 |
Ozone & wear resistance, moderate fluid compatibility |
Environmental seals, ground support equipment |
