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[China]
Address: Wei 2 West road Xi Wang Industrial Zone ,Mengcun County,Cangzhou City ,Hebei Pro,China PR
Contact name:Terry ding
Hebei Paris International Trading Co.,LTD |
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Products description:
SPIRAL WOUND GASKET FOR ASME B16.20 ,C276, MONEL, INCONL 825 FOR HIGH TEMPERAUTURE
ASME B16.20 Spiral gasket ,C276 gasket , MONELspiral gasket , INCONL 825 spiral FOR HIGH TEMPERAUTURE
Spiral wound gaskets — made with an alternating combination of formedmetal wire and soft fillermaterials — form avery effective seal when compressed between two flanges.A V-shaped crown centered in the metal strip acts as a spring, giving the gaskets greater resiliency under varying conditions. Filler and wire material can be changed to accommodate different chemical compatibility requirements. If the load available to compress a gasket is limited, gasket construction and dimensions can be altered to provide an effective seal.
A spiral wound gasket may include a centering ring, an inner ring or both. The outer centering ring accurately positions the gasket within the flange and acts as a compression limiter, while the inner ring provides additional radial strength. The inner ring also reducesflange erosion and protects the sealing element.
Resiliency and strength make spiral woundgaskets an ideal choice under a variety of conditions and applications. Widely used throughout refineries and chemical processing plants, spiral wound gaskets are also effective for power generation, aerospace, and a variety of valve and specialty applications.
The ASME B16.20 gasket specification has been updated and changed to a new recommended standard. The new criteria incorporates a default to inner rings in all graphite-filled spiral wound gaskets unless the purchaser specifies otherwise. However, a graphite-filled spiral wound gasketwithout an inner ring will still be stamped with and in compliance to the ASME B16.20 standard.
Basic Type:
Basic type gasket: inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics.
Suitable for tongue and groove, male and famale or grooved to flat face flange essemblies.
Inner Ring Type:
Solid inner metal ring acts as a compression stopper. To prevent accumulation of solids, reduce trubulent flow of process fluids and minimize erosion, damages of gasket between flange bore and the inside diameter, the annular space is filled up by solid inner metal ring;
Suitable for male and female pipe flanges.
Outer Ring Type:
Solid outer accurately locates the gasket on the flange face to give the additional radial strength to prevent gasket blowout and acts as a compression limiter. In case of installing the outer ring, it is very easy to install the gasket to flange face because the end of outer ring will touch at bolts;
Suitable for use with flat face and raised face flanges. For class 900 and above an internal ring is recommended.
Inner & Outer Ring Type:
An inner ring and outer ring type gasket will give an additional
compression limiting stopper for gasket inner and outer side. It
will prevent the corrosions on flange face at annular space;
Suitable for use with flat face and raised face flanges and specified for high pressure and temperature service, Class 900 and above or where corrosive or toxic media are present.
| Metal Winding & Inner Ring | Filler Materials | Outer Ring Materials |
As Standard SS304(L) Others Stainless Steel 309 310 317L 321 347 Alloy 20 Monel 400 Titanium 1,2,7 Nickel 200 Inconel 600,635 Incoloy 800,825 Hastelloy B2 C276 Duplex 31803 Copper Inner ring: Carbon steel also abailable | Flexible graphite PTFE Mica Ceramic Non-asbestos | As Standard Carbon Steel others 304(L) 316(L) 317 310 321 347 410 Alloy 20 Monel 400 Titanium 1,2,7 Nickel 200 Inconel 600,635 Incoloy 800,825 Hastelloy B2 C276 Duplex 31803 |
