Flange Isolation Kits
If cathodic insulation is required, Flanges need to be sealed properly to prevent leakage and must also be insulated to prevent stray currents which cause corrosion and eventual breakdown of the metal. Custom Gaskets distributes insulation kits and materials which help solve most flange sealing problems, therefore preventing subsequent corrosion and saving the integrity of the pipeline.
Custom Gaskets distributes Flange Insulation Gasket Kits manufactured according to ANSI B16.5 specifications up to 24". Above 24", please provide the specifications of your flange.
Type D gaskets are specifically designed to fit into the ring groove of ring-type-joint flanges. They are manufactured of a medium weave, fabric-reinforced phenolic material and are sized to ANSI specifications available in basic oval as well as octagonal shape. Also available are BX gaskets with pressure ratings to 15,000 PSI.
Type E is a full-faced gasket with the same outside diameter as the flange and precision cut bolt holes. This design facilitates proper alignment of the gasket during installation and foreign material prevented from shorting the flange insulation. Type E gaskets are available in plain face or Nitrile faced phenolic, as well as a variety of high temperature materials. Standard thickness of 1/8".
Type F gaskets are made to fit the raised face portion of the flange only. As there are no bolts holes in the F gasket, the inside diameter of the bolt hole circle is slightly smaller than the outside diameter of the gasket, assuring an exact, automatic positioning of the gasket. Available in the same materials as the type E gasket. Standard thickness of 1/8".