The common compact seal SPGW is made of a sealing ring, an O-ring and back up ring. Sealing ring material is generally filled with PTFE; the O-ring is made of nitrile rubber (NBR). ) or fluororubber (FKM); the back up ring is made of polyoxymethylene (POM) material. The combined seal SPGW has good dynamic and static sealing performance, low friction coefficient, no creeping at startup, and more importantly, stable operation.
| Materials | Operating Condition | ||
| Temperature ℃ | Pressure Range Mpa | Speed m/s | |
| PTFE+NBR+POM | -40~120 | 60 | 1.5 |
