Spiral Wound Flange Gasket For Flange ANSI Class 150 For Pipe Size 3/4 in Inside Diameter 1 in Outside Diameter 2 1/4 in Thickness 1/4 in Rim Stripe Color Gray Filler Material Graphite Outer Ring Material Carbon Steel Minimum Operating Temperature 0 Degrees F Maximum Operating Temperature 932 Degrees F Spiral Winding Material Stainless Steel Spiral Winding Stainless Steel Grade 304 Inner Ring Stainless Steel Grade Not Applicable Maximum Operating Pressure 150 psi