Hot Service

ThermoHelp can provide thermal insulation covers or hard insulation in the temperature range of 180 – 2100 F. ThermoHelp thermal insulation covers outer jacket is available in standard colors to compile with ANSI/ASME A13.1 Color Designation Pipe Marking requirements. Below is a material selection guide for hot service thermal insulation covers; our engineers will advise you of the best option for your particular application.

Temperature Range: 180 – 375 ºF

Valves, Pumps, Line Flanges, Piping & Piping Spools, L.R. Elbows 90, Sight Glasses, Vessels, Actuators, Steam Traps, and Filters are the usual equipment that operates in this range.
Inner Jacket 17 oz. Fiberglass Cloth Coated with Teflon (or Silicone, or Aluminum)
Outer Jacket 17 oz. Fiberglass Cloth Coated with Teflon (or Silicone)
Insulation Core 1” Thick, 2# Density Hi-Temp Fiberglass Mat
Sewing Thread Fiberglass Thread Coated with Teflon
Attachments Belts with Stainless Steel D-rings and Velcro Hooks & Flaps
Terminal Ends Fiberglass Cloth Coated with Teflon with Nomex Draw Cords
Tag 304 Stainless Steel Embossed Lettering

Temperature Range: 375 – 500 ºF

Valves, Pumps, Line Flanges, Piping & Piping Spools, L.R. Elbows 90, Sight Glasses, Vessels, and Actuators are the usual equipment that operates in this range.
Inner Jacket 17 oz. Fiberglass Cloth Coated with Teflon (or Silicone, or Aluminum)
Outer Jacket 17 oz. Fiberglass Cloth Coated with Teflon (or Silicone)
Insulation Core 2” Thick, 4# Density Hi-Temp Fiberglass Mat
Sewing Thread Fiberglass Thread Coated with Teflon
Attachments Belts with Stainless Steel D-rings and Velcro Hooks & Flaps
Terminal Ends Fiberglass Cloth Coated with Teflon with Nomex Draw Cords
Tag 304 Stainless Steel Embossed Lettering

Temperature Range: 500 – 900 ºF

Valves, Pumps, Line Flanges, Piping & Piping Spools, L.R. Elbows 90, and Heat Exchangers Heads are the usual equipment that operates in this range.
Inner Jacket 0.08” Stainless Steel Wire Mesh and Hi-Temperature Zetex Cloth
Outer Jacket 17 oz. Fiberglass Cloth Coated with Teflon (or Silicone)
Insulation Core 2” Thick, 4# Density Hi-Temp Fiberglass Mat
Sewing Thread 3-Ply Teflon Coated Stainless Steel Thread
Attachments Belts with Stainless Steel D-rings and Velcro Hooks & Flaps
Terminal Ends Fiberglass Cloth Coated with Teflon with Nomex Draw Cords
Tag 304 Stainless Steel Embossed Lettering

Temperature Range: 750 – 1300 ºF

Tank Bodies, Elliptical Heads, Line Flanges, Reactors, and Kettles are the usual equipment that operates in this range.
Inner Jacket 0.08” Stainless Steel Wire Mesh and Hi-Temperature Vermiculite Cloth
Outer Jacket 17 oz. Fiberglass Cloth Coated with Teflon (or Silicone)
Insulation Core 2” Thick, 4# - 6# Density Hi-Temp Fiberglass Mat
Sewing Thread 10-Ply Teflon Coated Stainless Steel Thread
Attachments Belts with Stainless Steel D-rings and Velcro Hooks & Flaps
Terminal Ends Fiberglass Cloth Coated with Teflon with Nomex Draw Cords
Tag 304 Stainless Steel Embossed Lettering

Temperature Range: 1000 – 1500 ºF

Capsulations of oil leaks from Pressure Vessels, Pumps, and Valves are the usual equipment that operates in this range.
Inner Jacket 0.08” Stainless Steel Wire Mesh and 0.06” – 0.08” Stainless Steel Foil
Outer Jacket 17 oz. Fiberglass Cloth Coated with Teflon (or Silicone)
Insulation Core 2” Thick, 6# Density Ceramic Wool
Sewing Thread 12-Ply Teflon Coated Stainless Steel Thread
Attachments Belts with Stainless Steel D-rings and Velcro Hooks & Flaps
Terminal Ends Fiberglass Cloth Coated with Teflon with Nomex Draw Cords
Tag 304 Stainless Steel Embossed Lettering

Temperature Range: 1500 – 2100 ºF

Pressure Vessels, Boilers, Boiler Heads, Pumps, and Valves are the usual equipment that operates in this range.
Inner Jacket 0.08” Inconel Wire Mesh and Hi-Temperature Silica
Outer Jacket Hi-Temperature Silica
Insulation Core 3” Thick, 11# Density Ceramic Wool
Sewing Thread 14-Ply Silica Coated Stainless Steel Thread
Attachments Belts with Stainless Steel D-rings and Velcro Hooks & Flaps
Terminal Ends Fiberglass Cloth Coated with Teflon with Nomex Draw Cords
Tag 304 Stainless Steel Embossed Lettering
For sight glasses and gauge covers, ThermoHelp uses 3/16” thick Soda-Lime Tempered Glass or clear Teflon window. For applications which require hard insulation, ThermoHelp uses fiberglass, ceramic wool, and calcium silicate. Hard insulation thickness can vary from 1” to 6” based on application. ASJ, stainless steel, or aluminum is used for the outside jacketing