Metal spiral wound gasket is currently widely used as a gasket, semi-metallic pad for the best elasticity of the gasket, by the V-shaped or W-shaped thin strip with a variety of fillers alternately wound, High temperature, high pressure and adapt to the use of ultra-low temperature or vacuum conditions, by changing the gasket material combination, can solve a variety of media on the gasket of the chemical corrosion, the structural density can be based on different locking force requirements to produce The main body and the precise positioning, winding gasket with metal inner ring and outer positioning ring, the use of internal and external steel ring to control the maximum degree of compression of the contact with the gasket flange sealing surface surface accuracy is not high.
Highly resilient Spiral Wound Gasket can automatically adjust the pressure thermal cycling and vibration of the piping system. It is especially suitable for applications where the load is not uniform, the joint force is easy to relax, the temperature and pressure are periodically changed, there is shock or vibration. It is widely used in petrochemical, mechanical, electric power, metallurgy, shipbuilding, medicine, atomic energy and aerospace, etc., which are valves, pumps, heat exchangers, towers, manholes, hand holes and other flange joints.
In the flange pad design for the convenience of installation, according to the size of the gasket, in the gasket on the outer welding of 2 to 8 positioning belt, so that positioning buckle in the flange hole, to prevent the installation of gasket shift or off , Saving the auxiliary materials and working hours. Generally divided into the following types:
Spiral Wound Gasket with high quality SUS304, SUS316 ("V" or "W") metal band and other alloy materials and graphite, asbestos, polytetrafluoroethylene, non-asbestos and other soft materials alternately overlapping spiral wound, The metal band is fixed at the beginning and at the end by spot welding. Spiral Wound Gasket for the semi-metal pad in the best elasticity of the gasket, Spiral Wound Gasket structure density can be based on different locking force requirements to make, and the use of internal and external steel ring to control its maximum degree of tightness, winding The surface accuracy of the flange contact surface of the gasket is not high. Spiral Wound Gasket is particularly suitable for uneven load, easy to relax the joint force, temperature and pressure cyclical changes, there are shock or vibration of the occasion. Winding washers are valves, pumps, heat exchangers, towers, manholes, hand holes and other flange connections to the original static seal.