• Ke28 rubber mastic tape is  waterproof and designed  for telecommunication industry. It consists of an ethylene propylene rubber (EPR)floor and Butyl Rubber floor.
  • High performance of adhesion, shape and super waterproof. It is also resistant to corrosion for Copper and various cable sheathing materials.
  • KE28 rubber mastic tape also suitable for water-seal with all kinds of telecommunication (equipment) and cable connectors with a temperature of 90℃ and with an emergency overload temperature of 130℃.


No.PerformanceTypical ValueTest Method
1Tensile Strength1.10 MPaASTM D 4325
2Elongation at Breaking Point9ASTM D 4325
3Di-electric Strength3.2ASTM D 4325
4Adhesion25N/50mmASTM D 1000
5Di-electric Consumption0.02ASTM D 4325
6Continuous Working Temperature90 ℃ASTM D 4388
7Emergency Overload Temperature130 ℃ASTM D 4388
8Water Absorption<   0.1g/(100 inch .24h)ASTM D 3833
9Ozone ResistancePassASTM D 4388
10Heat ExposurePass at 130 ℃ASTM D 4388

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