Fluoroelastomer Rubber, 86-93 °IRHD. Copolymer of vinylidene fluoride and hexafluoropropylene. Meets Aerospace Specifications DTD5612A and DTD5543B Grade 90. ASTM designation = FKM. ISO designation = FPM. Applications: Mouldings which are required to operate within the approximate temperature range of -20°C(-4°F) to +225°C (437°F), in contact with air, petroleum, silicone and diester-based liquids. The material is not suitable for use in contact with certain phosphate-ester-based liquids. |