SAE AMS7410
Rubber: Fluorocarbon Elastomer (FKM) Aircraft Engine Oil, Fuel and Hydraulic Fluid Resistant 70 to 80 Shore Type A Hardness Low Temperature Sealing Tg -47 ¿¿F (-43.9 ¿¿C) for Elastomeric Seals in Aircraft Engine, Fuel and Hydraulic Systems
standard by SAE International, 10/06/2021