Spiral wound gasket(PTFE) is the most resilient gasket among semi metal sealing gaskets.
It is made by alternately winding thin stainless steel strip with graphite or various fillers. Its structural density can be made according to different locking force requirements,
and the maximum compression is controlled by using inner and outer steel rings or inner steel rings. The surface accuracy of the flange sealing surface in contact with the gasket is not high.
Especially suitable for situations with uneven loads, easy relaxation of bonding forces, periodic changes in temperature and pressure, and impacts or vibrations.
Scope of use: Static sealing components at flange connections such as pipeline flanges, valves, pumps, heat exchangers, towers, manholes, and handholes,
widely used in chemical, mechanical, electrical, metallurgical, shipbuilding, pharmaceutical, and aerospace departments.