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Supplier Homepage > Products > Flange Insulation Gaskets
Flange Insulation Gaskets
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product: view count: 254Flange Insulation Gaskets 
unit price: Negotiable
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period for delivery: Consignment Deadline days
Expiry date: Long Effective
last update: 2017-10-01 08:22
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Cixi Xinsheng Sealing Factory is one of the leading flange insulation gaskets manufacturers in China, welcome to wholesale low price flange insulation gasket sets from our factory.

Product Type:Xinsen-IG

Features:

Flange Insulation Gasket Sets are used to solve the sealing and insulating problems of flanges, and to control losses due to corrosion and leakage of pipelines. They are widely used to seal flanges and control stray electric currents in piping at oil, gas, water, refinery, and chemical plants, to increase the effectiveness of cathodic protection systems.

Application of Flange Insulating Gasket Sets

To limit the extent and cost of cathodic protection current to only those pipes that need to be protected from the main cathodic protection system

To electrically "split up" long pipelines into distinctive cathodic protection systems

To isolate a pipeline to ensure that cathodic protection or stray electricity currents do not cause increased corrosion, or cause a hazard

To isolate piping systems where dissimilar metals are present

To eliminate static loading charge transfer in discharge or loading operations at oil storage terminals

Insulation Gasket Type:

Type E (Full Face Gasket)

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.

Type F (Ring Type Gasket)

This gasket is manufactured to fit only the raised face surface of the flanges. Outside diameter of the gasket is designed to be slightly less than the inside diameter of the bolt circle. It is recommended that the flanges be wrapped to prevent foreign material from "shorting out" the flanges.

Type D (RTJ Gaskets

To fit RTJ flanges. They can be produced according to ASME and API flange standard.

Sealing Gasket Physical Properties

Property

Plain
Phenolic

Neo-faced
Phenolic

Silicone
Glass
G-7*

Epoxy
Glass
G-10

Epoxy
Glass
G-11

Dielectric strengths
Volts/mil

500

500

350-400

550

550

Compressive strength

psi

25,000

25,000

40,000

50,000

50,000+

Water absorption  %

1.6

1.6

0.07

0.10

0.10

Insulating Resistance
Meg Ohms

40,000

40,000

2,500

200,000

200,000

Flexural 

strength psi

22,500

22,500

27,000

45,000

43,000

Operating 

temp  F

-65 to +220

-65 to +175

-292 to +450

-292 to +280

-292 to +349

Operating temp   C

-54 to +104

-54 to +79

-180 to +232

-180 to +138

-180 to +176

* = G-7 material should not be used with hydrocarbons, not even trace amounts.

Seal Element Temperature Limits

Nitrile

Viton

Teflon

Neoprene

EPDM

-65 to +250F

-20 to +350F

-292 to +450F

-40 to +248F

-65 to +248F

-54 to +121C

-29 to +177C

-180 to +232C

-40 to +120C

-54 to +120C

Flange Insulation Gasket Set is becoming more and more important in the industry of oil&gas, petroleum, chemical, refinery.


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