Leakage of static seals is mainly caused by relaxation of pretightening force.

 

1.  Heat expansion and cold contract caused relaxation of pretightening force. Disc Spring Cushion has notable characteristics of compensation, absorbing fluctuation of temperature difference into inner gaskets to achieve the goal of consistent pretightening force of bolts.

 

2.  Pressure variation caused relaxation of pretightening force. Disc Spring Cushion can absorb the pressure impulses, and compensate the distortion of flanges and seal materials caused by pressure fluctuation.

 

3. Mechanical vibration caused relaxation of pretightening force.Disc Spring Cushion can minimize the harms of mechanical vibration, in order to ensure permanent and reliable seals with the bolts unrelaxed in conditions of high and low temperature.

 

Design: low travel, high compensation

 

It is specially designed by computer (disc-shape with continuous curve).

 

Micro-clearance between flanges results in massive leakages, but low travel and high compensation of Disc Spring Cushion can perfectly meet the demands of compensation.