HTG System
The TECSON HTG flange insulating kit is comprised of an insulating gasket, insulating sleeves, insulating washers and metal backing washers. The insulating gasket is constructed from serrated metal core ,faced with SONMAX 700, a proprietary high temperature sealing material. Correct gasket location is ensured by the use of a SONMAX 700H ring, located around the periphery of the serrated metal core.
HTG high temperature flange insulation sets are specifically designed to create a seal and maintain electrical isolation across a wide range of seating stresses and flange classes in elevated temperature service. The SONMAX sealing material pushes the performance of the HTG insulation kit beyond the temperature capability of traditional insulation sets based on vermiculite or glass/epoxy sealing technology. SONMAX is designated as fire safe, complying with the requirements of the oil and gas industry recognized API 6FB fire tests.
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
