Hotline Tape, High Temperature Petrolatum Tape by Denso

High Temperature Petrolatum Tape
Denso Hotline Tape: High Temperature
Grouped product items
Product Name Qty
Hotline Tape, 2" X 33' Rolls, 36 Rolls/Case, by Denso
Hotline Tape, 4" X 33' Rolls, 18 Rolls/Case, by Denso
Hotline Tape, 6" X 33' Rolls, 12 Rolls/Case, by Denso



Denso Hotline Tape is composed of synthetic fabric impregnated with a special blend of high temperature petrolatum, mineral fillers and a clear polyethylene backing.


A specifically developed tape for use in high temperature applications. Ideal for pipe work above or below ground, underneath pipe insulation or for pipes laid in concrete.


Wide range of service temperature (up to 230°F)
Applied to marginally prepared surfaces (SSPC SP 2-3)
Can be applied to hot, cold and wet surfaces
Conforms to irregular shapes and profiles
Resistant to water, acid, salts & soil organics
Encapsulation of lead paint
Contains no solvents
Easy applications from arctic to tropical temperatures
Ready for immediate service after application
No primer required


Prepare surfaces by removing all loose scale, rust or other foreign matter in accordance to SSPC SP2 "Hand Tool Cleaning" or SP3 "Power Tool Cleaning". High pressure water wash of 3,000 - 7,000 psi is also suitable. Spirally wrap the tape with a minimum 1" overlap. For severely corrosive environments, a 55% overlap is recommended. While wrapping, press air pockets out and smooth all lap seams. Where tape rolls need to be joined, ensure that the overlap is sufficient between rolls to provide continuous protection.

Irregular surfaces such as valves, flanges, etc. may require the use of Densyl Mastic or Denso Profiling Mastic. Refer to the product sheets for these specific products for information on application and selection.

Technical Data

Property SpecificationsEnglishMetric

Thickness (ASTM D1000)

  46 mils  1.15 mm avg.


0.295 lbs/ft 1.25 kg/m2 avg.

Breaking Strength (ASTM 1000)

22.5 lbf/in. 200 N/50 mm min.

Elongation @ Break


Breakdown Voltage (55% overlap)

16 kV min.

Resistance to Cathodic Disbonding
(ASTM G-8 - 30 days Group B)

0.31 in2 avg.  200 mm2 avg.

Maximum Service Temperature

230°F 110°C

Roll Width

2" to 12" 50 to 300 mm

Roll Length

33 ft  Excellent 10 m

Recommended Primer

No Primer Required

Quantity Estimates
(all rolls are 33 ft in length)

Tape WidthRolls / CaseCoverage with
1" overlap
Coverage with
55% Overlap
2" 36 87 ft2/case 87 ft2/case
4" 18 145 ft2/case 87 ft2/case
 6" 12 162 ft2/case 87 ft2/case
8" 8 150 ft2/case 77 ft2/case
12" 6 177 ft2/case 87 ft2/case