Vermiculite Spiral Wound Gasket
Chemically and thermally composed by expanded vermiculite makes it an excellent filler material for use in spiral wound gaskets.
Content
What is Vermiculite Spiral Wound Gasket?
Vermiculite spiral wound gasket is a critical service gasket designed for use in applications involving high temperatures and aggressive chemical media. And this style gasket is comprised of a spirally wound sealing element composed of a metal winding strip tape in combination with a vermiculite based filler material.
Service and Application
Vermiculite spiral wound gaskets are suitable for use in a wide range of sealing applications. They are capable of effecting a high integrity seal in the most demanding environments and are particularly suited to applications involving extremes of thermal or mechanical cycling. Typical applications include superheated steam, strong oxidising media and elevated temperature service.
Maximum recommended temperature : 980 oC (18000F)
Maximum recommended pressure : ASME B16.5 2500 lb
Construction:
Filler material: Vermiculite
Winding strip: 304, 304L, 316, 316L, 316Ti, 310, 321, 347, 410, Inconel 600, 625, Monel 400, Titanium, Nickel, Incoloy 800 or 825
Centering Compression ring: 304, 304L, 316, 316L, 316Ti, 310, 321, 347, 410, Inconel 600, 625, Monel 400, Titanium, Nickel, Incoloy 800 or 825
Why we Use Vermiculite as the Filler of Spiral Wound Gasket?
Chemically and thermally composed by expanded vermiculite makes it an excellent filler material for use in spiral wound gaskets. This natural mineral has an structure that simulates to exfoliated graphite, with one notable exception – it maintains sealing integrity through a wide range of extreme temperatures. It exhibits exceptional chemical resistance
Other Fillers of Spiral Wound Gasket
Flexible Graphite
High purity flexible graphite with no binders or fillers. This provides an excellent sealability and excellent resistance to a wide range of chemicals. Its unique combination of low permeability, inherent lubricity and compressibility makes this material be suitable for critical gas and vacuum services.
PTFE
PTFE is used as a filler material in gaskets where extreme chemical inertness is required. PTFE is unaffected by any known chemicals except molten alkali metals and fluorine precursors. Because of its low permeability, PTFE is also frequently used as a filler material on our spiral wound gaskets in vacuum applications.
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