Product Name: ASME B16.20 Spiral Wound Gaskets
Type: Spiral Wound Gasket
Standard: ASME B16.20
Size: 3 Inch, DN80
Pressure Class: Class 150 LB
Thickness: 4.5 mm
Materials:
Inner Ring: SS 304
Filler: Flexible Graphite
Outer Ring: Carbon Steel
Facing: Raised Face
Source: https://www.landee.cn/asme-b16-20-spiral-wound-gaskets-ss-304-ir-fg-filler-3-in.html