Anticorrosion polyethylene tape No. 55 is developed for preventing corrosion and protecting various types of pipelines. It consists of a polyethylene film base and a self-fusing butyl rubber adhesive layer. The tape provides superior durability and corrosion resistance for protecting pipelines, power cables, and communication cables. It is highly flexible, conforms well to complex shapes, and forms an effective anticorrosion layer when wrapped. Testing shows the tape maintains high tensile strength and elongation even after long term chemical immersion. It also exhibits excellent insulation resistance and watertightness over time. The tape should be stored in a cool, dark place and not used in areas with temperatures over 70°C.

1. Doc No.BSH210E 2 2010/06/02 1/3
No.55
Outline
Anticorrosion polyethylene tape NO.55 Developed for prevention of corrosion and protection of various
types of pipelines. It consists of a polyethylene film and high chemical resistance and a self-fusing type
adhesive layer.
Using polyethylene with excellent electrical property and chemical resistance as base material together
with thick-coated synthetic butyl rubber-base adhesive, it brings out superior durability and anticorrosion
property. Being highly flexible, it is easy to wind and suitable for work in temperature and for work on joint
or flexural area.
Structure
Fig-1 Structure;№55
Application
●For anticorrosion/protection of various types of pipelines.
(Not only straight sections, but also flanges, elbows, T-joints etc.)
●For anticorrosion/protection of power cable and communication cab.
Features
●As adhesive layer is butyl rubber type material, it flows after being wrapped and forms anticorrosion
layer as one.
●It fits snugly against any shape, no matter how complex.
●Offer superior durability and corrosion resistance.
●Electrical insulation and chemical resistance is excellent.
●Has superior watertight properties because it is a self-fusing tape with a self-adhesive layer.
1／3
Butyl rubber adhesive
Polyethylene base

2. Doc No.BSH210E 2 2010/06/02 2/3
Standard size and color
Table-1 Standard sizes and color
Part NO.
Thickness
(mm)
Width
(mm)
Length
(mm)
Color
NO.55 0.4 25.50 10 Black
Characteristic
● General properties
Table-2 General properties
Item Test result Test method
Thickness (mm) 0.4 －
Adhesive Strength
(N/25mm width)
23℃ 55.0
Elongation
(%) 23℃ 500
According to JIS Z 1901
Standard distance 50mm
Tensile speed 500mm/min
Overlap adhesion
(N/25mm width)
23℃ 50.0
Overlap length 100mm
Pressure bonding time 2 hrs
Tensile speed 500mm/min
Volume resistance (Ω.cm) 5x1013
According to JIS C 2107
Applied voltage 500vXmin.
Electrode 20cm2
Insulation break voltage (kV/mm) Over10
According to JIS C 2107
Electrode 12.5mmφ mass500ｇ
Voltage boost 2kV/sec
***Values listed above are typical and not guaranteed.
●Chemical resistance
After 1000hrs.immersion in each chemical, the test was conducted.
Table-3 Chemical resistance
Contents
Chemicals
Tensile Strength
(N/25mm width)
Elongation
(%)
Before immersion 5.0 520
5％ NaOH 4.6 490
5％ H2SO4 4.6 470
*** According to JIS Z0237（2009）

3. Doc No.BSH210E 2 2010/06/02 3/3
●Water tightness
A tape-wrapped (50mmφ) steel pipe is immersed in 3% saline solution and the change of
insulation resistance with time was measured.
(one round by half-wrap)
1.0E+10
1.0E+11
1.0E+12
1.0E+13
0 1 2 3 4 5 6 7 8 9 10
Period (month)
InsulationResistance（Ω）
Fig-2; Change of Watertightness with Days
Cautions Concerning Use
●The tape should be stored in a dark and cool place.
●The tape is not suitable for application to the area exposed to the ambient temperature of 70℃ or
above.
●Petrolatum is dissolved by organic solvents. Please do not contact with organic solvents.