Why joint-vulcanised seals?

Seals manufactured at Karl Druschke Dichtungfertigung e.K. (seal production) are exclusively made using the joint vulcanisation process. This process vulcanises endless material into a sealing ring at the joint through the influence of time, pressure, temperature and liquid raw material.

These processes produce a molecular chain at the point of vulcanisation (=joint) of the seals. A special process is used at the point of vulcanisation to produce greater resistance to atmospheric and mechanical impacts than with bonded seals, for example. In contrast to joint-vulcanised seals, bonded seals have no molecular chain. The point of adhesion is therefore the weak point of the seal.

Frequently, air humidity alone is sufficient to dissolve bonded seals without any other mechanical influences at the point of adhesion.