Ss304 Inner Ring CS Outer Ring PTFE Filler Spiral Wound Gasket with ASME16.20 Standard

Spiral wound gasket is formed of V-shaped or W-shapedmetallic strip piled with soft non-metallic filler by spiralwinding, and connected the end by spot welding.Spiral wound gasket can be used to seal fluid pressureup to 250 bar cryoprenices temperature as low as -200ºCengineering industriesand up to elevated temperature of 1000ºC.Products arewidely used in the oil, gas, petrochemical process and
engineering industries.* The outer ring is generally manufactured from carbon steel with an anti-corronsion treatment.
* Other special material gasket can be customized, such as 304L,321,316TI,317,310S,347,410,duplex
steel, Monel, Inconel(600,625),Incoloy(800,825),Hastello(B2,C276),T2 piled with special non-matellic
material, such as inner or outer ring, expanded PTFE, Non-asbestos, Mica.Type of spiral wound gasket:CodeTypeThickness(mm)XS-G1500ABASIC TYPE3.24.5XS-G1500BWITH INNER RING3.24.5XS-G1500CWITH OUTER RING3.24.5XS-G1500DWITH INNER AND OURTER RING3.24.5
*Other thickness can be customized, such as 2.5mm V-shaped,5.5mm,6.4mm,7.5mm W shape.etc.Common structure:FillerStripInner ringOuter ringAsbestosSUS 304Carbon steelCarbon steelGraphiteSUS 316SUS 304SUS 304PTFESUS 316LSUS 316LSUS 316L
The table below is used for selecting material of inner ring and winding metal:Product nameAISIHardness(HB/HV)Temperature(ºC)Carton steel CSCS120-40-540Stainless steel 304304130-180-250¯ +550Stainless steel 316316130-180-100¯ +550Stainless steel 316L316L130-190-100¯ +550
* The outer ring is generally manufactured from carbon steel with an anti-corronsion treatment.
* Other special material gasket can be customized, such as 304L,321,316TI,317,310S,347,410,duplex
steel, Monel, Inconel(600,625),Incoloy(800,825),Hastello(B2,C276),T2 piled with special non-matellic
material, such as inner or outer ring, expanded PTFE, Non-asbestos, Mica.The table below is used for determining the correct filler:Filler materialTemperatureMax operating pressure(kg/cm²)Graphite-200-550250Asbestos-150-450100PTFE-240-260100
Type of flange and spiral wound gasket:Type of FlangeType of spiral wound gasketFull face flange (F.F)With outer ringWith inner and outer ringRaised face flange(R.F)With outer ringWith inner and outer ringMale and female flange (M&F)Basic formWith inner ringTongue and groove flange(T&F)Basic formWith inner ringFlat and groove flange(F&G)Basic formWith inner ring
Tolerance of thickness:ItemThickness(mm)Tolerance(mm)Gasket thickness4.5 3.2+0.2 -0.1Ring thickness3.0±0.24
The table below specifies the production diameter tolerance(Nominal pipe diameter for flanges inaccordance):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≤1000>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>1000and≤1600>34″and ≤60″0-2.2
Note: We also can produce according to ASME,JIS,JPI,NF BS,EN1092 standards or clients requirement.