Spiral Wound Flange Gasket For Flange ANSI Class 150 For Pipe Size 3 in Inside Diameter 3 3/16 in Outside Diameter 5 3/8 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