Product Name: Monel 400 Spiral Wound Gasket
Size: 265 * 276 * 309 * 317 mm
Thickness: 4.5 mm
Ring Thickness: 3–3.2 mm
Inner Ring Material: Monel 400
Winding Strip Material: Monel 400
Filler Material: Flexible Graphite (F.G.)
Outer Ring Material: Zinc-Coated Carbon Steel
Source: https://www.landee.cn/monel-400-sw-gasket-265-276-309-317-mm-thk-4-5-mm-fg-filler.html