'Flange Gasket, Ring Gasket, 8-3/4 In. Outside Dia., Bolt Holes -, 6-5/8 In. Inside Dia., 1/8 In. Thickness, Material of Construction Aramid Fiber with Nitrile Binder, 1000 Max. Pressure (PSI), -100 to 400 Temp. Range (F), Color Blue, Metal Detectable No, Standards ANSI Sized To Fit 150 lb Flat/Raised Face Flanges. ANSI B16.21'