Flange Isolating Gasket Kits

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Flanges can be one of the most common trouble areas in a CP System. Flanges need to be sealed properly to prevent leakage and must be cathodically isolated to prevent stray currents which cause undo corrosion and eventual breakdown of the metal.

APS manufactures and maintains a supply of quality products and materials which help solve most flange sealing problems, therefore preventing subsequent corrosion and saving the integrity of the pipeline. APS Flange Isolation Gasket Kits are manufactured according to ANSI B16.5 specifications up to 24″. Above 24″, please provide the specifications of your flange using our convenient worksheet. Technical assistance is available upon request.

 

 

TYPE D
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
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 isolation. 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
Type F gaskets are made to fit the raised face portion of the flange only. As there are no bolt 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. Type F gaskets are available in the same materials as the type E gasket. Standard thickness of 1/8″.

 

 

Retainer Materials Available:

  • Buna-N laminated-faced Phenolic
  • Glass Reinforced Epoxies
  • Plain-faced Phenolic
  • Durlon

 

Seal Materials Available:

  • Nitrile
  • Viton
  • EDPM
  • PTFE

 

 

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