Description:
The insulating sets comprise of a Glass Epoxy phenolic laminate or neoprene faced phenolic laminate gasket for different types, which is located between the flange sealing faces, phenolic laminate bolt sleeves, two insulating washers per bolt for maximum protection, and two plated mild steel washers per bolt. Stainless steel washers can be supplied upon request.
Insulating sets are essentially used for pipeline flange corrosion protection, where a seal is required between dissimilar flange materials. The use of dissimilar metallic flanges with a conductive gasket material accompanied by a suitable electrolyte may set up a galvanic cell which will corrode the anodic metal. Insulating sets are also used to electrically isolate flange joints, preventing the flow of electrostatic charge along pipelines.
The VCS sealing gasket is specially designed for flange sealing and insulating in all critical services. It is suitable for raised face, flat face, and RTJ flanges in all pressure classes, even API 15,000 psi service.
Stainless Steel Core:
The SS core is SS316L. Special materials such as Duplex, Inconel, etc. can be made according to the requirements.
Glass Reinforcement Epoxy:
Name G10 is the standard glass reinforced epoxy material, while G11 is available when higher temperatures are required.
SPECIFICATIONS | PLAIN PHENOLIC | NEOPRENE FACED PHENOLIC | REINFORCED PTFE | G-7 SILICONE GLASS | G-10 EPOXY/GLASS | G-11 EPOXY/GLASS |
Dielectric Strength Volts/mil | 500 | 500 | 350 | 350 | 550 | 550 |
Compress Strength psi | 25000 | 25000 | 2300 | 40000 | 50000 | 50000 |
Water absorption % | 1.6 | 1.6 | 0.01 | 0.07 | 0.1 | 0.1 |
Tensile Strength psi | 20000 | 20000 | 1450 | 25000 | 45000 | 43000 |
Operating Temp oF | -65~+220 | -65~+175 | -320~+500 | -320~+450 | -200~+302 | -50~+392 |
Operating Temp oC | -54~+104 | -54~+79 | -196~+260 | -196~+232 | -128~+150 | -45~+202 |
OPERATING TEMP. | NITRILE | VITON | PTFE | NEOPRENE | EPDM |
oF | -40~+250 | -20~+350 | -320~+450 | -40~+250 | -40~+250 |
oC | -40~+121 | -29~+177 | -196~+232 | -40~+121 | -40~+121 |
SPECIFICATIONS | G10 BONDED | G11 BONDED |
Dielectric Strength Volts/Mil | 550 | 550 |
Compressive Strength psi | 65000 | 50000 |
Water Absorption % | 0.05 | 0.085 |
Flexural Strength psi | 65000 | 60000 |
Tensile Strength psi | 50000 | 45000 |
Operating Temp oF | -200~+302 | -50~+392 |
Operating Temp oC | -128~+150 | -45~+202 |