Ningbo Tecson Sealing Technology Co.,Ltd
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Tecson Sealing Technology

Address: No.1,Huapeng Rd, Kandun District, Cixi City, Zhejiang Province, P.R.C

Tel: 0086-574-23707877

Fax: 0086-574-23707878



Flange Insulation Kits HTG System

Flange Insulation Kits HTG System

Flange Insulation Kits HTG System TG Flange Insulation System Description: 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...

Product Details

Flange Insulation Kits

HTG System


TG Flange Insulation 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 proprie-

tary 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.



- Operational  pressure  :  From  Full  vacuum  to  ASME  B16.5 1500lb (26.0MPa)

- Operational temperature -200˚C to 500˚C

- SONMAX  is  suitable  for  sealing  across  a  wide  range  of chemicals  (pH  0-14)  and  sweet  and  sour  gaseous  and  liquid


- Standard core and washer metallurgy are NACE (MRO175) compliant.

- Dielectric Strength (ASTM D149) : 10.0 kV/mm



- Fine refinery

- Hydrocarbon Processing

- Heat Exchanger

- Power Station



- Standard gasket core material: Stainless steel 316L, others can be supplied on requested

- Layer material: SONMAX 700

- Located ring material: SONMAX 700H

- Sleeve material: SONMAX 700

- Insulation Washer : SONMAX 700H

- Steel  Washers  :  ZPS  or  HCS,  please  noted  HCS  can  be used as insulation washer to instead SONMAX 700H wash- ers if necessary


Supply Specification:

- The  gasket  will  be  5.5mm,  with  4mm  core  and  0.75  x2 layer on both sides.

- Wall thickness of sleeve: 0.8mm

- Thickness of Washers: 3mm


Each HTG flange insulation set comprises:

insulating gasket : 1 per flange

Sleeves: 1 per bolt

Insulation Washers: 2 per bolt

Metallic Backing Washers: 2 per bolt


Ningbo Tecson Sealing Technology Co., Ltd. No. 1, Huapeng Rd, Cixi, Zhejiang, P.R.C


Phone: +86(574)23707877 Fax: +86(574)23707878


All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications means, however, that they can serve only as guide values. We must be notified of the exact conditions of application before we can provide any guarantee for a specific case. This is subject to change.

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