Fuel tank valve seal sits on support evenly perforated all over so seat face elastomer beds penetratingly into and through perforations.

摘要

The seal consists of a perforated (2) support (1), the perforations evenly spread right over the support and round in section and of equal size. Punching or etching can be usd to perforate the support and the sealing face has a raised rim registering with the seal seat. The rim (7) of the support (2) is devoid of seal facing or again is entirely enclosed by the face of the seal. The seal bearer is recessed all round for the support rim (7), followed by beading round the adjoining edge of the bearer. The bearer is formed by a magnetic armature in the shape of a hollow cylinder.