Specification Brand : DELFIELD BulletPoint1 : A Copper Gasket is used to mate two Conflat (CF) vacuum flanges together. These conflat copper conflat gaskets fit a conflat flange size of 2-1/8 inches. BulletPoint2 : The gasket material sealing two flanges determines the joint's maximum temperature and, to an extent, the base pressure of the vacuum volume. BulletPoint3 : Metal gaskets are impermeable to gases and withstand moderately high temperatures indefinitely. BulletPoint4 : The normal gaskets for stainless steel CF flanges are punched from 1/4 hard, high purity, oxygen-free (OFHC) copper stock. BulletPoint5 : The gaskets are then chemically cleaned and processed to minimize scratches and burrs. ConFlat (CF) flanges are used for ultra-high vacuum applications. ExternallyAssignedProductIdentifier1 : 0046851983871 ExternallyAssignedProductIdentifier2 : 046851983871 Hazmat : auto-grounding ItemName : Delfield 1701192 GASKET, DRW, 27, 2-HIGH, (1701192) ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : formed-in-place-gaskets Manufacturer : Delfield Material : Copper ModelNumber : 1701192 NumberOfItems : 1 PartNumber : 1701192 ProductDescription : DRAWER GASKET SupplierDeclaredDgHzRegulation : unknown