Spiral Wound Flange Gasket, For Flange ANSI Class 150, For Pipe Size 8 in, Inside Diameter 8 1/2 in, Outside Diameter 11 in, Thickness 3/16 in, Rim Stripe Color White, Outside Rim Color Yellow, Filler Material PTFE, Outer Ring Material Carbon Steel, Minimum Operating Temperature -320 Degrees F, Maximum Operating Temperature 500 Degrees F, Spiral Winding Material Stainless Steel, Spiral Winding Stainless Steel Grade 304, Inner Ring Material Stainless Steel, Inner Ring Stainless Steel Grade 304 This product contains a chemical that is regulated under California Proposition 65. Warning: This product contains a chemical known to the State of California to cause cancer. - Nickel (Metallic)