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This standard BS EN 3049:2025 - TC Tracked Changes. Aerospace series. O-rings, in fluorocarbon rubber (FKM), low compression set. Hardness 80 IRHD is classified in these ICS categories:
49.080 Aerospace fluid systems and components
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).
