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Flange & Bolt Insulation
 

A flange is typically insulated for cathodic protection reasons.  Insulating the flange requires that no metal to metal contact occurs between the two flanges, this includes between the bolts.  Plastic sleeves and washers are used on the bolts that prevents this contact.

Isolating products are used to guarantee the safe flow of fluids passing through pipeline transmission, distribution and process piping systems.

Flange and Bolt Insulation products are the most widely used form of controlling losses due to corrosion.  They can be used to control stray electric currents in piping at oil, gas, water, refinery, and chemical plants, to increase the effectiveness of cathodic protection systems and confine or eliminate electrolytic corrosion.

Industrial Gaskets can supply various sizes and types of insulating gaskets and complete gasket kits to suit any pressure or product requirements They are available in reinforced phenolic and other materials. Each kit is supplied with washers, sleeves and a gasket in a wide variety of materials including Phenolic, Minlon and Mylar. They are available for all flange sizes, types, pressure ratings.

Flange Insulation is designed to combat the effects of  corrosion often found in flanged pipe system.  Galvanic corrosion between dissimilar metal flanges, flange insulation associated with cathodic protection of underground piping are other examples where Flange Insulation can be put to effective use.

 Industrial Gaskets Flange Insulation - 

  • Designed to minimise electro-chemical erosion
  • Used to electrically isolate sections of pipework
  • Comprise of materials with high dielectric strength
  • Easily identified with each kit labelled with flange size & rating
  • Supplied as standard with “Top Hats” for bolt isolation and ease of instalment, gasket and steel washers




 



 
Bolt Insulation - Top Hat

Bolt Insulating "Top Hats" are used to provide electrical isolation between the bolts and flanges on a pipeline. Tough, convenient-to-use, one-piece sleeves and washers are available moulded. 

Price - Contact us for Pricing

Flange Insulation Kits - Type D

Insulating kits are used to provide electrical isolation between flanges on a pipeline.

Type "D" Gaskets are specially made for RTJ flanges to be positioned in the ring groove. 

Price - Contact us for Pricing

  
Flange Insulation Kits - Type E

Type "E" Insulation Gaskets extend to the outside diameter of the flange.  

Price - Contact us for Pricing

Flange Insulation Kits - Type F

Type F 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. 

Price - Contact us for Pricing

  
G10 / G11 Epoxy Washer

G10 / G11 Glass Epoxy Washers are the industry standard for isolating bolts.  

Price - Contact us for Pricing

Mylar Insulating Sleeve

Designed to fit easily over the flange bolts, and may be used with standard size bolts and bolt holes even with some misalignment.  

Price - Contact us for Pricing

  
Phenolic Insulating Washers

Insulating Washers are generally made of high strength phenolic and provide tough, positive insulation. They are available for most standard bolt sizes and are made to fit over the insulating sleeves. 

Price - Contact us for Pricing

  
 
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