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Applications:

l Flange isolation in conjunction with cathodic protection.

l Isolation between dissimilar metals to prevent galvanic corrosion.

l Wellhead isolation from inter-connected flow lines.

l Mating mismatched ring-joint to raised-face flanges (HPG will seal in ring-joint, raised-face and flat face/slip-on flanges).

l Eliminate fluid trap corrosion between ring-joint (RTJ) flanges where high concentrations of CO2, H2S and other

aggressive hydrocarbon media are present.

l Eliminate turbulence and flow-induced erosion between ring-joint (RTJ) flanges.

l Protect against coating damage on coated flange faces.

l To seal between flanges subjected to vibration/cavitation.

 

Materials
Metallic Core
Themetallic core of gasket is made of stainless steel 316L. 
Other metals,including Duplex and Inconel are available upon request.

Isolating Material 
1)G-10 Glass-Reinforced Epoxy (GRE)laminate:
Compressive Strength: 65,000 PSI 
Dielectric Strength: 750-800 VPM 
Max.Continuous Operating Temp: 300 degrees F (150 degrees C) 
Water Absorption: .05% 
Flexural Strength: 65,000 PSI 
Tensile Strength: 50,000 PSI 

2)G-11 Glass-Reinforced Epoxy (GRE) HighTemp. laminate material:
Compressive Strength: 50,000 PSI 
Dielectric Strength: 500 VPM 
Max.Continuous Operating Temp: 398 degrees F (200 degrees C) 
Water Absorption: .085% 
Flexural Strength: 57,700 PSI 
Tensile Strength: 41,000 PSI 

Seal Material

PTFE (Spring-Energized)

Viton

Buna-Nitrile

Silicon

Isolating Sleeve

GRE

Mylar

NOMEX 

Isolating Washers

GRE - G10/G11

HCS Washers

Steel Washer

ZPS 

XPS

SS