Arabian Broz manufactures insulation Gaskets and it is full kit for entire flange. Full gasket kit set consists of One insulating gasket, One full length sleeve per bolt, Two insulation washer per bolt, Two steel washer per bolt. This Gasket manufactured Ring Type (Inside Bolt Circle), Full Face (Entire Face of Flange with bolt holes) and RTJ for RTJ flanges. These Gaskets are used for preventing conduction (Physical, Electrical and Thermal) between flanges even through bolts.