Pipe with at least three layers, for use in fuel systems, comprises inner layer of fluoropolymer, middle layer of epichlorhydrin rubber and outer layer of nitrile-butadiene rubber and PVC

摘要

A pipe with at least 3 layers, comprises an inner layer (10) of fluoro-resin (F) based on tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride, an intermediate layer (12) of epichlorhydrin rubber (ECO) containing organophosphonium salt and fire retardant, and an outer layer (16) consisting of a mixture of nitrile/butadiene rubber and PVC resin.