Type D Flange Insulation Gasket are used for 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.
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Product name: Type D Flange Insulation Gasket |
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Item: |
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Details: |
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Insulation Flange Gasket Kits
are used for 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.
Type D insulation gaskets are available for RTJ flanges but the YZT-150 Sealing Gasket is an excellent alternative to D gaskets because the sealing element may be positioned anywhere between the I.D. of the gasket and I.D. of the ring groove.
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Property
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Plain
Phenolic |
Silicone
Glass G-7* |
Epoxy
Glass G-10 |
Epoxy
Glass G-11 |
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Dielectric strengths,
Volts/mil |
500
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350-400
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550
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550
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Compressive strength,
psi |
25,000
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40,000
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50,000
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50,000+
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Water absorption, %
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1.6
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0.07
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0.10
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0.10
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Insulating Resistance,
Meg Ohms |
40,000
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2,500
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200,000
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200,000
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Flexural strength, psi
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22,500
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27,000
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45,000
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43,000
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Operating temp, oF
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-65 to +220
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-292 to +450
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-292 to +280
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-292 to +350
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Operating temp, oC
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-54 to +104
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-180 to +232
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-180 to +138
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-180 to +177
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* = G-7 material should not be used with hydrocarbons, not even trace amounts.
Type D Flange Insulation Gaskets are suitable for RTJ flange, they can be produced according to ASME and API flange standard.
