Spiral Wound Gasket

The Spiral Wound Gaskets are composed of a metallic continuous stripe with a special shaped profile, coupled with a continuous filling stripe (Asbestos, PTFE, Grafoil, Ceramic etc) evenly wound in concentric spiral under constant stress. The Spiral Wound Gaskets are reinforced on the inner and outer diametre by winding of several electrically welded spiral metal only.

Material

Materials Standard materials are type 304 Stainless steel with composite Asbestos/ Graphite/ ePTFE / Mica Fillers.

Sr. No. METALS FILLERS
1
---
CHRYSOLITE ASBESTOS
2
SS 304
FLEXIBLE GRAPHITE
3
SS 304 L
MICA
4
Carbon Steel , Zinc Coated
ePTFE
5
SS 316 L
CERAMIC
6
SS 316
NON ASBESTOS

Gasket thickness

The standard manufacturing thicknesses for spiral wound gaskets

Sr. No. NOMINAL COMPRESSED THICKNESS INNER/OUTER THICKNESS
1 3.2 mm 2.4-2.6 mm 2.0-2.2 mm
2 4.5 mm 3.2-3.4 mm 3.0-3.3 mm

Marking of Spiral Wound Gasket