metal spiral wound gasket

Spiral wound gasket: is formed of V-shaped or W-shaped metallic stripe and non-metallic filler by means of lamination, spiral wounding and dot welding its beginning end by dot welding. Depend on its excellent compress resilience, it can sealing spot where the alteration of temperature and pressure is frequent. It can be used as the static sealing parts of pipe, valve, pump, thermal exchange, condensing power, plain hole and man hole of flange, etc. Spiral wound gasket : Our company was ISO9001 certificated, we can produce all kind of types with the best quality and good price. Here is the detailed information about spiral wound gasket as followSpiral wound gaskets type:TypeThickness(mm)Basic form3.24.5With inner ring4.5With outer ring4.5With inner and outer ring4.5Structure type:FillerHoopInner ringOuter ringAsbestosSUS 304Carbon steelCarbon steelGraphiteSUS 316SUS 304SUS 304PTFESUS 316LSUS 316SUS 316SUS 316LSUS 316LThe table below may be used for selected material of inner ring and winding metal.Trade nameAISIHardness(HB/HV)Temperature(°C)Stainless steel 304304130 180-250 +550Stainless steel 316316130 180-100 +550Stainless steel 316L316L130 190-100 +550The outer ring is generally manufactured from carbon steel with an anti-corronsion treatment.The table below may be used for determining the correct filler.Filler materialTemperature(°C)Max operating pressure(kg/cm2)Graphite-200 550250Asbestos-150 450100PTFE-240 260100Flange type and Spiral Wound Gasket formFlange typeSpiral Wound Gasket formFlat face flange(F.F)Gasket with an outer ringGasket with an inner and outer ringRaised face flange(R.F)Gasket with an outer ringGasket with an inner and outer ringMale and female flange(M & F)Basic form gasketGasket with an inner ringTongue and groove flange(T & F)Basic form gasketGasket with an inner ringFlat and groove flange(F & G)Basic form gasketGasket with an inner ringTolerances of thicknessItemThickness(mm)Tolerances(mm)Gasket thickness4.5, 3.2+0.2 -0.1Ring thickness3.0±0.24The table below specifies the production diameter tolerance (Nominal pipe diameter for flanges in accordance with):DIN (mm)ANSI B16.5 BS1560 (mm) Mss sp-44API 605TolerancesInner ring I.D. Gasket I.D.<=600<=24">=26" and <=34"±0.5>600 and <=800>24" and <=34">=36" and <=60"±0.9>800 and <=1600>34" and <=60"±1.3>1600>60"±1.6Gasket O.D.<=600<=24"<=24"±0.9>600 and <=1600>24" and <=60">24" and <=60"±1.81600>60"±2.2Outer ring O.D>=1/2" and <=60"±0.9<=600<=24"0-1.0>600 and <=1000>24" and <=34"0-1.8>1000 and <=1600>34" and <=60"0-2.2