A single-acting face sealing element includes a U-shaped PU seal and a metallic energizing spring. The sealing stays in a high sealing force and gives gas-tight sealing even at low temperatures. Resistant to most liquids and chemicals. applicable for inside or outside sealing.
| Materials | Operating Condition | ||
| Temperature ℃ | Pressure Range Mpa | Speed m/s | |
| PTFE | -200~260 | 20 | 2 | 
| PEEK | -60~260 | 20 | 1.5 | 



