Back-up Rings

FiPur®- Back-up rings for hydraulic seals

Upon extremely high operating pressure for instance from 500 bar and peak pressures up to 1,000 bar, it seems sensible to include a support ring with in the rod sealing system. This configuration is often used in heavy equipment cylinders additionally as a buffer seal in order to keep the burden of the actual rod seal. 

Usaually, we manufacture these support rings from engineering thermoplastics and PTFE.