Reinforced flange seal

摘要

The support consists of a wire (4) coiled into a flat spiral (3) with a diameter matching the flange, leaving a corresponding middle hole. The coils of the spiral are spot welded at points and stabilise the shape of the support. The coils are joined by welding tracks (5). The coils are welded by connections produced by a current impulse. The welding points are placed separately between the last layer and the straight-coiled wire, when the spiral is wound behind the coiling point. Screw holes are left free in the support.