Spiral Wound Flange Gasket, For Flange ANSI Class 150, For Pipe Size 3/4 in, Inside Diameter 13/16 in, Outside Diameter 2 1/4 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 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)