Gaskets

Spiral Wound Gasket with Carbon Steel Outer Ring, SS316L Winding, and Graphite Filler Inner Ring - Style GRI

Spiral wound gasket with an epoxy-coated carbon steel outer ring, SS316L winding, flexible graphite filler and an SS316 inner ring, manufactured to ASME B16.20. The inner ring supports the filler against inward blow-out, making GRI the standard choice for class 300 and above, high-pressure and small-bore flanges. Used in oil and gas, chemical and petrochemical, steam line and power generation pipework.

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Specifications

Style GRI (with inner ring)

Material Graphite filler / SS316L winding / CS outer ring

Insert SS316 inner ring

Standard ASME B16.20

Full description

The DEMINAS spiral wound gasket Style GRI is built for reliable sealing in the most demanding pipe flange applications. It features a carbon steel outer ring with epoxy coating for corrosion protection, SS316L winding for strength and flexibility, graphite filler for outstanding thermal and chemical sealing performance, and an SS316 inner ring that prevents the filler from being over-compressed and blown inward.

Technical Specifications

Style: GRI — CS outer ring / SS316L winding / graphite filler / SS316 inner ring
Outer Ring: Carbon Steel, epoxy coated
Winding Material: SS316L stainless steel
Filler Material: Flexible graphite
Inner Ring: SS316 stainless steel
Standard: ASME B16.20

When to Use Style GRI

The inner ring on a GRI-style gasket is recommended for high-pressure applications, small bore pipe flanges, and anywhere the filler material needs to be supported against inward blow-out. It is the standard choice for ASME class 300 and above applications.

Applications

Oil and gas piping systems
Chemical and petrochemical plants
Steam lines and pressure vessels
Power generation pipe flanges

Why Buy From DEMINAS

DEMINAS spiral wound gaskets are manufactured to ASME B16.20 and are available in a range of pipe sizes. Contact us if you need a size not listed or have a non-standard requirement — we can source or advise on the right specification for your application.