GRAPHITE GASKET FOR VACUUM CASTING GASKET FOR 3" PERFORATED FLASKS HIGH-HEAT GASKET - VACUUM SEAL Graphite Gasket for use in Vacuum Casting for sealing of the flange and the casting chamber. This graphite gasket is suited for 3" casting flask, is 1/16" thick material will withstand temperatures of up to 1200°F - 649°C. Gasket are long lasting, can be used even when they wear down to almost paper thin. Note: The Graphite gasket will last long and can be used as long as they are handled properly… avoiding cracking or breakage, they are subject to breakage. Graphite gaskets can be used in combination, along with silicone gaskets for optimum vacuum seal and heat protection. The graphite will prolong the life of the silicone gasket. SPECIFICATIONS: JETS Product # 0304-15230 - Material: High Temperature Graphite - Flask Diameter: 3" - 76.3mm - Gasket Outside Diameter: 4-1/2" - 114.3mm - Gasket Inside Diameter: 3-3/8" - 85.7mm - Gasket Face Width: 9/16" - 14.3mm - Thickness: 1/16" - 1.65mm.Item is new, Packaged - Item ships sandwiched in between cardboard to ensure safe shipping VERY FRAGILE!Note: The Graphite gasket will last long and can be used as long as they are handled properly… avoiding cracking or breakage, they are subject to breakage. SHIPPING: Via USPS MAILVisit JETSTOOLS our ebay Store to see listings for many other Lost Wax Casting Supplies and Accessories, including Casting Investment Powder, Casting and Carving Wax along with a selection of many other Jewelers Equipment Tools and Supplies JETSINC.E2 814 CKSP PA22