By tightening the screws the elastomer sealing lip is compressed, thereby producing the sealing effect on the surfaces to be sealed. It stops the medium from leaking to the outside, thus preventing loss of pressure. In addition, it provides protection against dirt from the outside. The centring feature of the USS type ensures that the bonded seal is fixed in the correct position for mounting and when tightening the screws, thereby guaranteeing captive mounting.
Bonded seals are used as static seals for screw connections and flange seals, for example in machine building and container- and apparatus construction. Benefits of bonded seals: - Simple, captive assembly - Secure sealing - Reusable - Fixation due to inner centring - Cost-effective solution - Controlled compression due to washer - Available in different metal finishes - Stocked for almost all European thread sizes.