Flexible graphite seal ring:
1. density : 1.1—1.5gcm3
2. tensile-strength : 4Mpa
3. compressibility :25—31%
4. rebound degree : 20—30%
5. friction coefficient :0.08—0.12
6. thermal coefficient : 21.5 times asbestos gasket
7. absence of oxygen: 3000°C
8. permit wire-speed operation:40m/s
9. structural style : pure graphite seal ring , metal skeleton sealing ring, intertwine sealing ring graphite packing line