Within the family of specialty synthetic rubbers, fluorosilicone gum stands out by combining the best features of both silicone and fluorocarbon rubbers. It is created by attaching fluorinated alkyl groups—typically trifluoropropyl—to the siloxane backbone. This unique molecular architecture grants it a “dual advantage”: retaining silicone rubber’s wide temperature tolerance while gaining fluororubber-like resistance to oils and solvents.

Standard silicone rubber performs well across a broad temperature range (typically –60°C to 250°C) but swells and degrades when exposed to fuels, lubricants, or organic solvents. Conversely, conventional fluoroelastomers resist oil effectively but lose flexibility at low temperatures. Fluorosilicone gum bridges this gap—it maintains elasticity down to –55°C or lower while showing minimal swelling and excellent stability when in prolonged contact with aviation fuels, hydraulic fluids, alcohols, and other aggressive media.

As a result, fluorosilicone gum is commonly used in demanding applications where reliability under harsh conditions is essential. Examples include fuel system seals, gaskets, and hoses in aerospace; turbocharger hoses and seals in high-performance automotive systems; and dynamic seals in chemical processing equipment exposed to corrosive substances.

Due to its complex synthesis and higher cost, fluorosilicone gum is typically reserved for situations where conventional elastomers fall short. Nevertheless, it embodies a key principle in modern polymer science: tailoring molecular structure to meet extreme operational demands.

Though rarely seen in everyday life, this niche yet vital material quietly ensures safety and performance at the frontiers of advanced engineering.

General Purpose Fumed Extrusion Silicone Rubber, plz check MY HTV 315 series