Kammprofile Gasket For Flange ANSI Class 150 For Pipe Size 12 in Inside Diameter 13 3/8 in Outside Diameter 16 1/8 in Thickness 3/16 in Filler Material Graphite Outer Ring Material Carbon Steel Minimum Operating Temperature -300 Degrees F Maximum Operating Temperature 1 100 Degrees F Spiral Winding Material Stainless Steel Spiral Winding Stainless Steel Grade 316 Inner Ring Stainless Steel Grade Not Applicable Standards ASME B16.21 Market Industrial System of Measurement Inch