Endstück

Endstück, literally “end piece” in German, is a generic term for a component designed to terminate, seal, or provide a connection at the end of a system or element. It is used across several industries, including piping, tubing, hoses, electrical cables, and mechanical assemblies. Endstücke take forms such as caps, plugs, ferrules, or terminal pieces and are shaped to match the geometry and connection standard of the end they close or join.

In piping and tubing applications, an endstück closes the end of a pipe or tube to prevent leakage and protect the interior. Endstücke can be threaded, welded, or slip-fit, and may be flush or protruding. Common materials include metals such as steel, stainless steel, brass, and plastics such as PVC or polyethylene. Seals or gaskets are often used to ensure a leak-tight fit.

In hoses and cables, endstücke serve to terminate, secure, or adapt the end to a fitting or connector. Hose end pieces may be crimped, clamped, or threaded, while cable end pieces may be crimp lugs or insulating caps. Materials reflect the application, ranging from rubber and plastics to metal, chosen for flexibility, electrical insulation, or chemical resistance.

Selection of an endstück depends on dimensions (inner and outer diameters, thread type), mechanical loads, pressure, temperature, and chemical compatibility, as well as installation method. While many endstücke are standardised for common diameters, others are engineered as bespoke components to fit equipment or processes.