Flange isolation kits are available for all flange sizes, types, pressure ratings and materials. Each kit is individually and securely packaged in a reinforced corrugated cardboard box, which is clearly labeled as to its contents for convenience in warehousing and field use.
Sleeves and washers are enclosed in a strong polyethylene bag to eliminate any possibility of loss. A chart showing the recommended sequence for tightening flange bolts is also included with each kit, as well as with each individual gasket. Very large diameter gaskets are packaged separately from the sleeves and washers for convenience in storing and handling.
Type "E" Gaskets:
have the same outside diameter as the flanges, and are made with precision-located bolt holes. They are easy to center and will prevent foreign mataerial from becoming lodged between the flange faces and "shorting out" the flange insulation. Type "E" gaskets are available in a wide variety of materials.
Type "F" Gaskets:
are made to fit within the bolt hole circle of the flange faces. The outside diameter of the gasket is slightly larger than the inside diameter of the bolt hole circle. They are available in a wide variety of materials.
Type "D" Gaskets:
are made specifically to fit into the ring groove of RTJ flanges. They are available in reinforced phenolic and other materials.
Insulating Sleeves and Washers:
are available in complete kits, with or without a gasket. Sleeves and washer are available as separate parts or as a one-piece molded unit.
NCL carries a variety of insulation kits. Please call 1-800-426-3111 for information on ordering and availability.