3M 2228 Scotch Rubber Mastic Tape Black 25mm x 3m


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3M™ 2228  Scotch® Rubber Mastic Tape Black 25mm x 3m

Product Description
Scotch 2228 is a conformable self–fusing rubber electrical insulating and sealing tape. Scotch 2228 consists of an ethylene propylene rubber (EPR) backing coated with an aggressive, temperature–stable mastic adhesive. The tape is made 65mils (1.65 mm) thick for quick application build–up. It is designed for electrical insulating and moisture sealing applications. Scotch 2228 can be used on copper or aluminum conductors rated at 90°C, with an emergency overload rating of 130°C. It offers excellent resistance to moisture and ultraviolet exposure and is intended for both indoor and weather exposed outdoor applications.

Product Features

  • Conformable for application over irregular surfaces
  • Compatible with solid dielectric cable insulation
  • Self–fusing tape
  • Flexible over wide temperature range
  • Excellent weather and moisture resistance
  • Excellent adhesion and sealing characteristics with copper, aluminium and power cable jacket materials
  • Thick construction allows quick application build–up and padding over irregular connections

Product Applications

  • Primary electrical insulation for cable and wire connections rated up to 1000 volts
  • Electrical insulation and vibration padding for motor leads rated up to 1000 volts
  • Padding for irregular shaped bus bar bolted connections
  • Moisture seal for cable and wire connections
  • Moisture seal for ground wire and rod connections
  • Jacket seal on power cable applications


Typical Data/Physical Properties

 Typical Rating  Test Method
 Temperature rating 90°C  ASTM D-4388
 Adhesion to Steel 26.2N/10mm  ASTM D-1000
 Adhesion to PE 17.5N/10mm  ASTM D-1000
 Fusion - Type 1 Pass  ASTM D-4388
 Tensile Strength 1.03N/mm²  ASTM D-4325
 Elongation at Break 1000%  ASTM D-4325
 Dielectric breakdown wet or dry 19.7kV/mm  ASTM D-4325
 Dielectric constant 3.5  ASTM D-4325
 Dissipation factor 1.0%  ASTM D-4325
 Water absorbtion 0.15%  ASTM-570
 Water vapor transmission rate 0.1g/100in²/24hr  ASTM D-3833
 Ozone resistance - Pass  ASTM D-3833
 Heat resistance - Pass 130°C  ASTM D-4388
 UV Resistance - Pass  ASTM D-4388


SKU 3M2228-25
Brand 3M

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