• HTHP Insulation Kit
  • HTHP Insulation Kit

HTHP Insulation Kit

HTHP flange insulation kit is comprised of an insulating gasket, insulating sleeves, insulating washers and metal backing washers.

The insulating gasket constructed by a machined grooved metal core with mica spacer ring and faced with Hi-temp mica on both sides.

HTHP flange insulation kit are specifically designed to effect a seal and maintain electrical insulation across a wide range of seating stresses flange classed in elevated temperature service. They can be utilized in load compromised connections; such as damaged and/or lined flanges and also heavily bolted connections where significant gasket stressed may be generated.

  • HTHP Insulation Kit
Description

The use of Hi-Temp mica as sealing material pushed the performance of the HTHP insulation kit beyond the capability of traditional insulation sets based on phenolic resin or glass/epoxy sealing technology.

  •  Operational pressure range: 2500#
  • Operational temperature range: 700°C
  • Hi-Temp mica material is suitable for sealing across a wide range of chemicals (PH0-14) and sweet and sour gaseous and liquid hydrocarbons.
  • API 6FB 3rd Fire test passed

 The insulating gasket and washers have been designed and developed for use in standard pipeline flanges where both cathodic protection and high integrity sealing is require at elevated service temperatures.

 

Typical Physical Properties

Insulating Gasket:

  • Core thickness: 3mm (316ss is standard, special materials like duplex stainless steel, inconel stainless steel also available )
  • Facing thickness: 0.75mm (2 sides)
  •  ASTM D149 Dielectric Strength: 650 VPM
  • ASTM F37 Leakage Test: 0.03 ml/s

Insulating Sleeve (Mica):

  • ASTM 149 Dielectric Strength: 550 VPM
  • Max. Operation Temperature: 700° C

Insulating Washer (Mica):

  • ASTM D149 Dielectric Strength: 550 VPM
  • ASTM D695 Compressive Strength: 65000 psi
  • ASTM D570 Water Absorption: 0.21%
  • Max. Operation Temperature: 700°C

Metal Backup Washer:

316ss steel in 3mm thickness

 

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