ASSOCIATED GASKET’S COMPREHENSIVE SPIRAL WOUND GASKET GUIDE
Your complete, 58 page guide to all the various styles, sizes, materials, standards and constructions available. Associated Gaskets’ Spiral Wound Gaskets Guide is packed with sizing tables for all common flange standards found in Australia and allows you to choose the best gasket for your needs.
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THE THREE MOST POPULAR STYLES OF SPIRAL
Windings and Filler Only
Style W Spiral Wound Gaskets are comprised of just the metallic windings and the soft, non- metallic filler. These can be produced in a wide range of sizes, shapes and thicknesses as well as variable densities to suit a variety of sealing requirements. Most often, materials chosen will be 316 Stainless Steel for the windings with a flexible graphite filler; though others are available.
Windings, Filler and Solid Outer Ring
Style WR SWGs consist of a spiral wound sealing component (basically Style W) with an added solid metal outer ring. The outer ring (or centering ring/guide ring as it is sometimes known) serves to centre the gasket on the flange, acts as an anti-blowout device, provides radial support for the spiral wound component and acts as a compression stop to prevent the windings and the filler from being crushed. Normally, the outer rings are manufactured from mild steel or stainless steel but can be produced from other metals when required.
Windings, Filler, Solid Outer and Inner Rings
Style WRI gaskets are identical to Style WR except for the fact that WRI’s feature an additional solid steel inner ring. Like the outer ring present on these and the WR, the inner ring on style WRI serves a number of purposes. These include providing radial support on the ID of the gasket to help prevent buckling or imploding whilst also serving as an additional compression limiter. The ID of a standard sized Style WRI SWG is normally slightly larger than the ID of the flange bore, minimising turbulence in process flow. Inner rings are normally supplied in the same material as the metallic windings.