Spiral Wound Flange Gasket, Inside Diameter 2 3/8 in, Outside Diameter 2 7/8 in, Thickness 1/8 in, 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 Stainless Steel Grade Not Applicable, Maximum Operating Pressure 300 psi, Standards None, System of Measurement Inch