Denso WB Tape is composed of a non-woven synthetic fabric carrier, fully impregnated with a petrolatum compound containing synthetic rubber polymers and inert mineral fillers. To provide additional protection the tape has a high-density polyethylene backing.

Uses

A specifically developed non-leaching tape for buried pipes, rods, cables, etc. that are exposed to dry soils for long periods.

Features

• Highly resistant to dry soils
• Applied to marginally prepared surfaces (SSPC SP 2-3)
• UV resistant
• Conforms to irregular shapes and profiles
• Can be applied to cold and wet surfaces
• Ready for immediate service after application
• Encapsulation of lead paint
• Contains no solvents
• Easy application from arctic to tropical temperatures
• Resistant to acids, water, salts & alkalis

Application

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. Apply a thin film of Denso Paste, which serves as a primer. 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. For additional mechanical protection, an overwrap may be used to increase impact strength and electrical resistance.

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.

Properties (typical)

English

Metric

Thickness (ASTM D1000)
Weight
Breaking Strength (ASTM 1000)
Water Vapor Transmission (ASTM E96 - 66 Procedure A)
Elongation at Break
Breakdown Voltage (55% overlap)
Resistance to Cathodic Disbonding (ASTM G8 - 30 days)
Resistance to Acids, Alkalies and Salts
Service Temperature, max
Roll Width
Roll Length

46 mils
0.295 lbs/ft²
22.5 lbf/in
0.006 perms
20%
16 kV
0.47 in²
Excellent
158°F
2" to 12"
33 ft

1.15 mm
1.44 kg/m²
200 N/50 mm
0.006 perms
20%
16 kV
300 mm²
Excellent
 70°C
50 to 300 mm
10 m

Recommended Primers

Denso Paste, Denso Paste S105,
or Denso Priming Solution

Tape Width

Rolls per Case

Coverage with
1" Overlap

Coverage with
55% Overlap

2"
4"
6"
8"
12"

36
18
12
8
6

87 ft²/case
145 ft²/case
162 ft²/case
150 ft²/case
177 ft²/case

87 ft²/case
87 ft²/case
87 ft²/case
77 ft²/case
87 ft²/case