BS EN 3049:1998 PDF

1 Scope This standard specifies the characteristics of o-rings in fluorocarbon rubber FKM, low compression set, hardness 80 IRHD, for aerospace applications. They are intended to be used in air, mineral/synthetic oil and fuel systems. Operating conditions — Temperature:

Continuous operation: – 20 °C to + 225 °C; Static applications minimum temperature of use: – 50 °C.

Limitation: not to be used with phosphoric ester type hydraulic fluids (permanent or temporary immersion).