Product Name: Monel 400 SW Gaskets
Type: Spiral Wound Gasket
Materials:
Inner Ring: Monel 400
Outer Ring: Carbon Steel, Zinc Coated
Strip: Monel 400
Filler: Flexible Graphite
Size: 211 * 222 * 253 * 263 mm
Thickness: 4.5 mm
Ring Thickness: 3–3.2 mm
Source: https://www.landeepipefitting.com/monel-400-sw-gaskets-fg-filler-211-222-253-263-mm.html