lipped seal / spiral / metal
Spiral wound gaskets are made of semi-metal and posses high resilience facilitating heavy operation. This system is designed by winding non-metallic filler with a V-shaped metal strip which provides mechanical resistance. Provision of inner and/or outer ring intensifies this system. The outer centering ring supports the gasket while controlling the compression. The inner ring enhances the resilience increasing the axial rigidity. It must be in contact with a flange and should not be projected from it. This system must not be protruded in the pipe. This system is highly applicable to be used in heat exchangers, pumps, tube-covers, pressure-vessels, manhole and handhold covers. It is largely used in pharmaceutical, petrochemical and many others industries.