Polymer preformed part has cavity in which is installed sealing element which is positioned in preformed part by means of mandrel during manufacture of preformed part

摘要

The polymer preformed part (1) has a cavity in which is installed at least one sealing element (2) which has an opening which communicates with the cavity. The sealing element is fastened in the polymer preformed part with positive and/or non-positive and/or material locking, and during the manufacture of the preformed part is positioned in the cavity by means of a mandrel (4). The cavity in the preformed part is cylindrical, at least in sections. The sealing element is an O-ring, and the preformed part is a shrink sleeve.