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PGE Flange Isolating Gasket Kit

PGE Flange Isolating Gasket Kit

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What is PGE Flange Isolating Gasket Kit?

The PGE flange isolating gasket kit was designed to give operators an alternative to the failure prone phenolic-based isolating gaskets. The unique design of the PGE flange isolating gasket kit incorporates patented overlapping and offsetting seal grooves. The purpose of this design is to break each layer of laminate within the gasket itself, thereby creating a barrier through which fluid and gas cannot migrate. The sealing ring element can be any elastomeric material, as well as more sophisticated spring-energized PTFE lip seals. As a result of this advanced seal design, maintenance-free flange isolation and flange face corrosion mitigation are achieved economically. Depending upon the sealing element selected, the PGE flange isolating gasket kit is rated for most hydrocarbon and water service applications.

This PGE flange isolating gasket kit is suitable for use in raised-face and flat-face flanges in ANSI Class 150, 300 and 600 service (or equivalent). In addition to providing electrical isolation, the gasket is excellent for isolating flanges made of dissimilar metals or where prevention of flange face corrosion is desired.

PGE Flange Isolating Gasket Kits China

Why Use a PGE Flange Isolating Gasket Kit?

The PGE flange isolating gasket kit is a type gasket which has high-reliability and low-pressure sealing system, it provides excellent electrical isolation for cathodic protection systems and protects against flange face corrosion and flow-induced erosion, the PGE flange isolating gasket kit is available in ring (type F) style or full-face (type E) style and it is the superior sealing solution for low-pressure (ANSI class 150, 300 and up to 600) service. It has Low required bolt loads. PGE flange isolating gasket kit is sized to the bore, which protects flange faces from media-induced corrosion and flow-induced erosion. It is easy to instal, make up and removal.


The PGE flange isolating gasket kit is an excellent choice for isolating distribution lines and transport lines for gas, oil and water. Because of the PGE flange isolating gasket kit has near zero creep relaxation, it performs well in heat exchangers, applications with high vibration or excessive thermal cycling.

Gasket Material Properties

Glass-Reinforced Epoxy NEMA grade G-10

Compressive Strength: 66,000 PSI
Dielectric Strength: 800 VPM Max.
Continuous Operating Temp: 150° C
Water Absorption: 0.10
Flexural Strength: 52,000 PSI
Tensile Strength: 32,000 PSI

Glass-Reinforced Epoxy NEMA grade G-11

Compressive Strength: 50,000 PSI
Dielectric Strength: 550 VPM Max
Continuous Operating Temp: 200° C
Water Absorption: 0.20
Flexural Strength: 57,000 PSI
Tensile Strength: 41,000 PSI

Insulating Sleeve Materials

Sleeve Material
Dielectric Strength
Low operating temp
Max operating temp
Water Absorption
Mylar 500 vpm -59°C 149°C 0.8%
Nomex 500 vpm -54°C 232°C
G7 350 vpm
-196°C 232°C 0.07%
G10 550 vpm -128°C 150°C 0.1%
G11 550 vpm -45°C 202°C 0.1%

Insulating Gasket Washer Material

Sleeve Material
Dielectric Strength
Compressive Strength
Tensile Strength
Water Absorption
500 vpm 25000 psi 20000 psi 1.6%
400 vpm 30000 psi 32000 psi 0.01%
G7 350 vpm
40000 psi 25000 psi 0.07%
G10 550 vpm 65000 psi 50000 psi 0.1%
G11 550 vpm 50000 psi 43000 psi 0.1%

Steel Washer Materials

The materials usually are zinc plated carbon steel, also can be stainless steel 304 or 316 materials. Sometimes for special application, the steel washer can be HCS with X37 coating.