8-1 DESCRIPTION Bonded seals are metal washers with a trapezoidal elastomer sealing lip vulcanized to their inner diameter. 8-2 ADVANTAGES The bonded seal provides a good security solution in the industrial sector and solves many static sealing problems. They are particularly used as static seals for screw connections and flange seals. 8-3 FUNCTION The bonded seal provides a comprehensive security solution for problems of resistance to pressure and vibration under extreme temperature conditions. The laterally outward pressure causes the contact of the lips on the sealing surfaces. A complete seal is achieved both during stationary operation and at pressures of about 700 bar. 8-4 MATERIAL The standard BS rings are available in the following combination : • Washer : carbon steel treated against corrosion • NBR 90 SH Further special types of bonded seals or according to customers drawings are available on request. 8-5 INSTALLATION INSTRUCTIONS 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. These installation recommendations are only indications and are intended as approximate guidelines. Users are advised to perform tests validating the installation. « The material supported on the washer must have a minimum value of 0,70 mm.

8 - BONDED SEALS STACEfcl V. _ _V .y *BSP= British Standard Pipe 8-6 SELF-CENTRALISED BONDED SEALS The centralising feature is a thin membrane, the inner diameter of which equals the core diameter of the locating thread. The thin seal membrane offers little resistance during assembly. This self-centralised seals are distinguished by : - Elimination of seal offset - Ease of installation - Reduced assembly time - Captive assembly

8 - BONDED SEALS 8-7 DIMENSIONS References

8 - BONDED SEALS References

8 - BONDED SEALS References « The material supported on the washer must have a minimum value of 0,70 mm. »