Fluoroether rubber is usually used as a sealing material in high temperature oil environment. In this study, FM-1D fluoroether rubber is the research object and is aged at high temperature in No. 15 aviation hydraulic oil. Its tensile strength, elongation at break, compression permanent deformation, mass change, volume change, surface and fracture morphology after aging are studied and compared with those of nitrile butadiene rubber. The results are as follows. Fluoroether rubber has excellent aging resistance to aviation hydraulic oil medium. Its tensile strength, elongation at break and compression permanent deformation may keep stable after aging in the hydraulic oil medium below 170℃. Its heat resistance basically remains unchanged. Changes of mass and volume of fluoroether rubber in hydraulic oil increase with increase of temperature and keep stable over time. It is better than the nitrile butadiene rubber compound in terms of mass, volume changes and stability. In the aging process of fluoroether rubber, degradation of compression permanent deformation basically conforms to the exponential decay law, but degradation of tensile property obviously does not conform to that law, and model Arrhenius (P=Ae^-Kt) equation does not apply to life prediction either.

fluoroether rubber  /  nitrile rubber  /  aero hydraulic oil  /  aging  /  degradation rule