A serrated, machined metal core insulating gasket faced with high-temperature THERMa-PUR™, sleeves, washers, metal backing washers and a Garlock 5500 spacer ring.

The VCXT™ high temperature flange insulation sets create a seal and maintain electrical isolation across a wide range of seating stresses and flange classes in elevated temperature service. They can be used in load compromised connections; such as damaged and/or lined flanges and also heavily bolted connections where significant gasket stresses may be generated.

The insulating gaskets and washers have been designed and developed for use in standard pipeline flanges where both cathodic protection and high integrity sealing are required at elevated service temperatures. For non-standard bolted connections please consult your regional GPT sales manager.

FEATURES AND BENEFITS

  • Fire safe in compliance with API 607 and API 6FB
  • THERMa-PUR™ is suitable for sealing across a wide range of chemicals (pH 0-14) and sweet and sour gaseous and liquid hydrocarbons
  • Standard core and washer metallurgy are NACE (MRO175) compliant.
  • High compression characteristics achieve strong seal over wide range of flange surface finishes
  • Exceeds temperature capability of traditional vermiculite or glass/epoxy insulation sets - 770°F (410°C)
  • Better handling/shipping integrity than mica or vermiculite based products
  • Sizes available 1/2" - 48" NPS
  • Highest temperature rated isolating product available
  • Wide range of chemical resistance

APPLICATIONS

  • Fire-safe flange insulation in conjunction with cathodic protection
  • Insulation between dissimilar metals to prevent galvanic corrosion
  • Wellhead isolation from inter-connected flow lines
  • Valve connections
  • Christmas Tree connections
  • Pump connections
  • Compressor connections
  • Mating mismatched ring-joint to raised-face flanges (VCFS will seal in ring-joint, raised-face and flat face/slip-on flanges)
  • Eliminate fluid trap corrosion between ring-joint (RTJ) flanges where high concentrations of CO2, H2S and other aggressive hydrocarbon media are present
  • Eliminate turbulence and flow-induced erosion between ring-joint (RTJ) flanges.
  • A better option for steam applications than GRE

SPECIFICATIONS

  • Operational pressure range: Full vacuum to ASME B16.5 2500lb
  • Operational temperature range: -328°F to 770°F (-200°C to 410°C)
  • Blowout Rating (650˚F): 4147 psi
  • Steam Test (hrs. performance @ 407˚F (208˚C)): 6285 hrs.
  • Electrical Test @ 500V DC: 35Gohms

Note: Electrical values are based on laboratory conditioned samples in laboratory conditions. Exposure to moisture or elevated temperature will change values.

Typical Physical Properties

Insulating Gasket & Washers

  • Core Thickness Facing Thickness: 4mm (316SS Core); 0.75mm (x2) (Facing)
  • Factor (m) ASME Minimum: 4.00
  • Seating Stress (y): 3625 psi (25 MPa)
  • Dielectric Strength (ASTM D149a): 3.937 kV/mm

Mica Insulating Sleeves

  • Maximum Temperature Dielectric Strength: +500˚C 20.0 kV/mm

Mica Washers

  • Stainless Steel: 0.125” thick

Other washer material can be provided to suit the application

Resources

Customer Service

Customer Service Inquiries
Phone (Office):
Fax:
+1 800 543 0598
Regions:
North America
Customer Service Manager
John Allen
Phone (Office):
Fax:
+44 1480 404662
Regions:
Europe

Product Manager

Product Manager - Isolation Products
Tim Hurley
Phone (Office):
Fax:
+1 303 988 1922
Regions:
Africa, Asia, Central America, Europe, Middle East, North America, Oceania, South America
Product Line Specialist
Phone (Office):
Regions:
Africa, Asia, Europe, Middle East, North America, Oceania, South America

Sales

Customer Service Inquiries
Phone (Office):
Fax:
+1 800 543 0598
Regions:
North America
Southeastern USA Sales Manager - TX, AR, KS, OK, LA, MS, AL
Peter Aubin
Phone (Office):
Fax:
+1 303 988 1922
Regions:
North America
Eastern USA Sales Manager
TamerBebawy
Phone (Office):
Regions:
North America
Western USA Sales Manager
Richard Moore
Phone (Office):
Regions:
North America
Canada Sales Manager
GlennOrmsby
Phone (Office):
Regions:
North America
Regional Sales Manager
Dinesh Adwani
Phone (Office):
Fax:
+971 4 8833682
Regions:
Middle East
Business Manager - Director
Phone (Office):
Regions:
Africa, Europe, Middle East
Regional Manager
Richard Edwin
Phone (Office):
Fax:
+971 4 883 3682
Regions:
Africa, Middle East
Regional Sales Manager
Osama Gad Emam
Email Address:
Phone (Mobile):
Fax:
Regions:
Africa
Sales Manager
Fernando
Phone (Office):
Fax:
+55 11 4789 9011
Regions:
South America
Asia Pacific Regional Manager - Oceania, Bangladesh, Hong Kong, Indonesia, Thailand & Vietnam
Hamilton Hind
Phone (Office):
Regions:
Asia, Oceania
Sales Manager - Korea, Japan & Sakhalin Island
Quentin Lee
Phone (Office):
Regions:
Asia
Subject Matter Expert - Oil and Gas
Ian Morris
Phone (Office):
Phone (Mobile):
Fax:
+44 1480 404662
Regions:
Europe
Sales Manager - China
Email Address:
Phone (Office):
Phone (Mobile):
Fax:
+86 21 6477 5793
Regions:
Asia
Regional Sales Director
Kishore Pradhan
Phone (Office):
Fax:
+971 4 883 3682
Regions:
Middle East
Sales
Eduardo Villasmil
Email Address:
Phone (Office):
Regions:
Central America, South America
Subject Matter Expert Oil & Gas - Malaysia, Brunei, Singapore, Taiwan, Philippines & Myanmar
Wilson Wee
Phone (Office):
Regions:
Asia

EFFECTIVE AUGUST 1st - We are excited to announce that the VCXT product will now be produced in our Wheat Ridge, CO facility in an effort to more

GPT Launches VCXT Isolation Kit for your demanding applications!