20 150# 304 SS AND GRAFOIL RW S/W GSK

This spiral wound gasket is supplied in yellow 304 Stainless Steel Class 150 with a 20 inch nominal pipe size and a Class 150 pressure rating, catalogued under part number 7GSW4A2000. It alternates metal windings with a soft filler so the gasket recovers elastically through thermal and pressure cycling.

It resists salt water and washdown, chemical attack, and high pressure. That behavior comes from the compound itself: 304 Stainless Steel delivers high mechanical strength and pressure capability, long service life in demanding outdoor environments. Applications involving galvanic pairing with dissimilar metals or chloride stress cracking in some grades call for a different compound.

You will find this material specified across marine and offshore, food and beverage processing, and petrochemical.

Stocked as 7GSW4A2000 and sold individually. Unit weight is approximately 2.75 lb. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.