Fluid sealing element such as sealing ring for sealing components of electrical fuel pump used in motor car, has resilient material portion that is formed such that sealing portion is provided with degressive spring characteristic

摘要

The fluid sealing element (1) has an elastomer or fiber reinforced plastic material portion (7) that is formed such that a sealing portion is provided with a degressive spring characteristic. A metallic spring element (11) is coated with the elastomer or fiber reinforced plastic material. The metallic cup spring element is provided with a spring steel portion. An independent claim is included for an electrical fuel pump.