Spiral-wound gaskets comprise a mix of metallic and filler material. Generally, the gasket has a metal (normally carbon rich or stainless steel) wound outwards in a circular spiral (other shapes are possible) with the filler material (generally a flexible graphite) wound in the same manner but starting from the opposing side. This results in alternating layers of filler and metal. The filler material in these gaskets acts as the sealing element, with the metal providing structural support.
These Gaskets Are Produced in three thickness (3.2mm,4.5mm,7.2mm) and their Diameters includes the range between 14 mm to 2800mm. Spiral Wound Gasket’s Properties:
By Choosing suitable material for strip and filler, Spiral Wound Gaskets can cover pressure up to 200 Bar, temperature between 200°C and 1000°C and all kind of chemical environments.
Due to Proper elasticity, Spiral Wound Gaskets are very resistant to heat shock and pressure shock.
The ease of installation is one of its prominent features. Due to lack of using glue at assembling of these gaskets, the changing process is comfortable.
Filler Material (Non Metal)
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Filler Material
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Min Tem. (°C)
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Max Tem. (°C)
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Graphite
|
-212
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510
|
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PTFE
|
-240
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230
|
|
Ceramic
|
-212
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1090
|
|
Mica
|
-212
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345
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Non-Asbestos
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|
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Metal Material (includes Strip, Inner and Outer
Ring)
Stainless Steel 316
Stainless Steel 304
Stainless Steel 321
Stainless Steel 347
Stainless Steel 410
Monel 400
Inconel 600
Carbon Steel (C.S)
Low Temperature Carbon Steel (LTC.S)