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).
PUBLISHED
SSH EN 3049:2006
IN_DEVELOPMENT
prSSH EN 3049:2025
40.20
DIS ballot initiated: 12 weeks
Feb 9, 2026
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