Spiral Wound Flange Gasket, For Flange ANSI Class 2,500, For Pipe Size 1/2 in, Inside Diameter 3/4 in, Outside Diameter 2 1/8 in, Thickness 3/16 in, Rim Stripe Color Gray, Outside Rim Color Yellow, Filler Material Graphite, Outer Ring Material Carbon Steel, Minimum Operating Temperature -320 Degrees F, Maximum Operating Temperature 842 Degrees F, Spiral Winding Material Stainless Steel, Spiral Winding Stainless Steel Grade 304, Inner Ring Material None