736/5000
Non-metallic sealing fillers (expanded graphite, PTFE, asbestos, not asbestos) with certain wide continuous spirals with steel strips, and welded welded at both ends will become complete spiral wound gasket. According to the type of flange, an inner ring, an outer ring or both can be added, so, the gasket is SWG with the inner ring, SWG with the outer ring.
This gasket is good in stress compensation and sealing effects, suitable for valves with high temperature and pressure or often changing temperatures. Spiral gasket with PTFE fillers is recommended for applications with strong acids, alkalis and high demand from clean.
Application:
1) Temperature: -200 _ + 650 Celsius
2) Pressure: 42 mpa