This document 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:
a) Continuous operation: −20 °C to +225 °C;
b) Static applications minimum temperature of use: −50 °C.
Limitation: not used with phosphoric ester type hydraulic fluids (permanent or temporary immersion).
WITHDRAWN
EN 3049:1998
PUBLISHED
EN 3049:2025
60.60
Standard published
Dec 24, 2025