密封垫圈螺旋上升的伤口缸与内部和外

seal gasket Spiral Wound Gasket with inner and outer ringAntileak GA 01104 Spiral Wound Gasket with inner and outer ring is also called SWG with inner and outer ring. Besides the basic SWG sealing part, an inner ring has been inserted to enhance gasket performance and an external guide ring accurately centers gasket on flange face. The inner ring is added to prevent the possibility of the gasket imploding into the pipe during installation, to protect the sealing element from extreme temperatures and mediums, fill the void between flanges to prevent erosion of the flange, and to reduce the possibility of failure. The inner ring is normally made of the same alloy as the winding. The DIN 2699 standard (German) specifies inner rings in all spiral wound gaskets. Inner rings are required for gasket with PTFE filler according to ASME B16.20 standards, and considered important for graphite fillers. This profile is normally used in raised and flat faced flanges. The external ring a provides additional radial strength to prevent gasket blowout and acts as a compression stop. This profile is normally used in raised and flat faced flanges. The outer ring is often made of carbon steel (painted or zinc plated to prevent corrosion) but can be made of alloys for higher temperature and more severe medium applications. StyleConstructionFlangeHoop materialFillerInner & outer Material Size (mm)Thickness (mm)MaterialCodeVWGA 01101basic typeTongue and Groove304304L316316L321TaMon400Inconeletc.Asbestos Graphite PTFE Mica Ceramic ASB FG PTFE MICA CERCarbon steel 304321 316Ta Mon400 InconelΦ16-30003.2 4.54.8 5.5 7.5GA 01102with outer ringRaised face and Flat faceGA 01103with inner ring Male and FemaleGA 01104with inner and outer ringRaised face and Flat faceGA 01105for heat exchangerHeat exchanger