Flange Insulation Gasket Kits

Flange Insulation Gasket Kits

This gasket kit provides complete protection of both flange faces. The gasket has same outside diameter of flanges. This feature will prevent collection of foreign matter between the flange faces to ensure complete cathodic isolation.

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Product Description

Kaxite Products Flange Isolation Gasket Kits are designed to maintain the integrity and reliability of the pipeline and piping system thorough safety and corrosion protection. Flange Isolation Gasket Kits provide both an effective seal and reliable electrical isolation of flanges. By eliminating metal to metal contact, static current is halted to prevent corrosion and aid in the Cathodic Protection of the piping system.

Constructed of high quality materials that have a high dielectric constant and low water absorption, our Flange Isolation Gasket Kits are available in various configurations to meet every possible need.


We offer Flange Isolation Gasket Kits in all sizes, ranging from 1/2″ to 144″, in all Ansi and API classes. Custom and special sizes are also available upon request.



Insulation Kits

Flange insulating sets are packaged for one flanged joint, including gasket, sleeves and washers. Each flange set is securely packaged in a cardboard box, clearly labelled as to size, ASA Rating, style and material. Either polyethylene or phenolic sleeves are available with these insulating sets. Polyethylene sleeves are standard and will be furnished unless otherwise specified.

Type D

(API Ring Joint) - gaskets are insulating ring joint gaskets made to fit the ring groove of Ring Type Joint flanges. The Type D central gasket is made of medium weave fabric-reinforced phenolic, manufactured to ASA (ANSI) gasket dimensions. Properties are similar to those of phenolic flat central gaskets and are available in the basic octagonal shapes. Oval shapes can be ordered by special request. When installing Type D gaskets, it is also recommended that tape be wrapped around the outside of the flange to prevent foreign material from lodging between the exposed portions and causing "shorting out" of the flanges. Alignment pins should be used whenever possible to assure proper alignment of flanges when installing all flange insulation sets. Pins should be a minimum of 3/32" (2.38mm) larger than the bolt size.

Type E

(Full Face) - gaskets are designed for full protection of flanges and have the same outside diameter as the flange. Each gasket has precision-located bolt holes. Upon installation, it is recommended that tape be wrapped around the outside of the flange to prevent foreign material from lodging between the exposed portions and causing "shorting out" of the flanges. All Type E gaskets are easily centered with the flange inside diameter. Gaskets with slightly larger outside diameters are available on request.


Type F

(Ring) - gaskets are designed to fit the raised face portion of flanges. The outside diameter of the gasket is slightly smaller than the inside diameter of the bolt hole circle. The outside diameter is designed for alignment by the insulating sleeves. The central gaskets are available in the same materials as Type E. Upon installation, it is recommended that tape be wrapped around the outside of the flange to prevent foreign material from lodging between the exposed portions and causing "shorting out" of the flanges.


Note: 

Type D gaskets can be used with RTJ or API applications only. 

Type E gaskets can be used with Raised Face (RF) or RTJ applications. 

Type F gaskets are self-centering and can be used with Raised Face (RF) or RTJ applications. 

Please make sure to indicate if the gasket is needed for RTJ application when submitting RFQ to confirm that seal placement is correct. 



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