Flange Insulation Gasket Kit

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1
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Pieces
Origin

China Mainland
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Description

Product Detail

Flange Insulation Gasket Kits are usd 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 Insulation Gasket kits

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

Sealing Gasket Physical Properties

Property	Plain Phenolic	Neo-face 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,ºF	-65 to +220	-65 to +175	-292 to +450	-292 to +280	-292 to +350
Operating temp, ºC	-54 to +104	-54 to +79	-180 to +232	-180 to +138	-180 to +177

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

Seal Element Temperature Limits

Nitrile	Viton	Teflon	Neoprene	EPDM
-65 to +250ºF	-20 to +350ºF	-292 to +450ºF	-40 to +175ºF	-65 to +248ºF
-54 to +121 ºC	-29 to +177 ºC	-180 to +232 ºC	-40 to +79 ºC	-54 to +120 ºC