Super Thin Waterproof Waterseal Mastic Tape T28

◆ Continuous waterproofing;
◆ Ultra-thin;
◆ Good tensile strength;
◆ Highly self-fusing tape;
◆ Suitable for irregular shapes cable;
◆ Resistance to high/low temperature;
◆ Resistance to corrosion;
◆ Resistance to ozone, UV, xenon exposure;

Cotran Brand T28-thin waterseal mastic tape is a new generation made from EPR and butyl rubber. T28-thin is produced according To a new improved formula of COTRAN, which is a fusion of all advice from the base station staff. It inherits all the KC80 good features, and also has the new characteristics of being light&thin and easy to be operated.


Applications

◆ Use for insulating, filling and moisture sealing in splices of all types of power cables and optical telecommunication cables;
◆ Use for insulation and moisture sealing irregular shaped bus bar bolted connections;
◆ Use for moisture sealing high or low voltage junction boxes and irregular splices;
◆ Moisture seal for power cable and wire connections;
◆ Moisture seal for service drops;
◆ Moisture seal for ground wire and rod connections;


Test Parameters

No.

Test Item

Result

Test Method

1

Dimension

45mmx1mmx10m

ASTM D4325

2

Tensile Strength

0.74MPa

ASTM D4325

3

Elongation at Break

906%

ASTM D4325

4

DielectricStrength

20kV/mm

ASTM D1000

5

Adhesion (180° Steel plate)

29.6N/50mm

ASTM D1000

6

Ozone Resistance

Pass

ASTM D4388

7

UV Resistance

Pass

ASTM D4388

8

Xenon-arc Exposure

Pass

ASTM D4388


Installation

Cotran Brand T28-thin waterseal mastic tape should be applied in half–lapped layers until desired insulation build up is reached.

Step 1 Wipe off the dusts on the splice area before wrapping.


 

Step 2 Remove the liner and stretch the tape to 1 to 2 times of its original length, apply the tape in 50%-lapped with mastic side toward area to the wrapped. Stretching the tape to 4 times of its original length is not recommended.


 

Step 3 Make sure there is 30mm to 50mm wrapping tape above both sides of the splice area.


 

Step 4 After T28-thin waterseal mastic tape is applied, overwrapping COTRAN PVC insulation tape is recommended, apply 3 layers of COTRAN PVC insulation tape in a 50% overlapping with no tension. Make sure not to overstretch the PVC tape during installation.

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