Product Name: SS 304 Spiral Wound Gaskets
Design Standard: ASME B16.20
Size: 20 Inch, DN500
Pressure: Class 150 LB, PN20
Thickness: 4.5 mm
Materials:
Inner & Outer Rings: Stainless Steel SS 304
Winding: SS 304 with Flexible Graphite Filler
Source: https://www.landeepipefitting.com/ss-304-spiral-wound-gasket-asme-b16-20-20-in-cl150-4-5-mm.html