In aircraft engines and fuel systems, ordinary rubber seals often face a "double whammy": high temperatures reaching 200°C on one side, and highly corrosive aviation kerosene and lubricating oils on the other. Under such extreme conditions, ordinary silicone rubber is prone to swelling and failure, while fluoroelastomers often fail to meet low-temperature standards. At this point, Fluorosilicone Rubber (FSR) becomes an irreplaceable "oil-resistant guardian." FSR combines the high and low-temperature resistance of silicone rubber with the oil and solvent resistance of fluoroelastomers. The trifluoropropyl groups introduced into its molecular side chains endow it with extreme chemical inertness. Experimental data shows that when soaked in aviation fuel or hydraulic oil, FSR exhibits a very low volume expansion rate and can maintain sealing performance for long periods. Meanwhile, it maintains elasticity across a wide temperature range of -60°C to 230°C, coping effortlessly with the extreme cold at high altitudes and the intense heat around engines. Currently, it is widely used in manufacturing aircraft fuel hoses, seals, and gaskets, safeguarding flight safety.
IOTA FLSR3435 Room Temperature Curing Liquid Fluorosilicone Rubber