Product Name: SS 316 Spiral Wound Gaskets
Type: Spiral Wound Gasket
Standard: ASME B16.20
Dimensions: OD 1026 mm * ID 916 mm
Thickness: 4 mm
Inner Ring Material: SS 316
Outer Ring Material: SS 316
Filler Material: Graphite

Source: https://www.landee.cn/ss-316-spiral-wound-gaskets-od-1026-mm-id-916-mm-thk-4-mm.html