Threaded joint for sealed cable ducts comprises a stationary or fixed double nipple, a pressure screw with an axial through opening, and an annular clamping/sealing insert formed by tubular expansion bellows

摘要

Threaded joint for sealed cable ducts comprises a stationary or fixed double nipple (1), a pressure screw (2) with an axial through opening screwed onto the double nipple, and an annular clamping/sealing insert formed by tubular expansion bellows (4) and inserted between the double nipple and the pressure screw. The cable passes through these parts and the clamping/sealing insert is deformed by the double nipple and pressure screw so that strain relief and sealing of the cable occurs. Preferred Features: The expansion bellows is made of an elastically deformable plastic, especially an elastomer, an elastically deformable rubber material, or a combination of these materials.