Scotch Rubber Mastic Tape 2228 is a conformable self–fusing rubber electrical insulating and sealing tape. Scotch® Rubber Mastic Tape 2228 consists of an ethylene propylene rubber (EPR) backing coated with an aggressive, temperature–stable mastic adhesive. The tape is made 65 mils (1,65 mm) thick for quick application build–up. It is designed for electrical insulating and moisture sealing applications. Scotch Rubber Mastic Tape 2228 is a UL recognized component for applications up to 130⁰C. It offers excellent resistance to moisture and ultraviolet exposure and is intended for both indoor and weather exposed outdoor applications.
FEATURES:
- Conformable for application over irregular surfaces.
- Compatible with solid dielectric cable insulations.
- Self–fusing tape.
- Flexible over wide temperature range.
- Excellent weather and moisture resistance.
- Excellent adhesion and sealing characteristics with copper, aluminum and power cable jacket materials.
- Thick construction allows quick application build–up and padding over irregular connections.
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.
- Primary electrical insulation for bus bar connections rated up to 35kV (3M drawing 2047B–106)
- Padding for irregular shaped bus bar bolted connections.
- Moisture seal for cable and wire connections.
- Moisture seal for service drops.
- Moisture seal for ground wire and rod connections
- Jacket seal on power cable applications
| Properties | Typical Value |
| Temperature Rating | 266ºF (130ºC) |
| Color | Black |
| Thickness | 65 mil (1,65mm) |
| Adhesion | Steel 15.0lb/in (26,2N/10mm) PE 10.0lb/in (17,5N/10mm) |
| Fusion | Pass (Type I) |
| Tensile Strength | 150psi (1,03N/mm2) |
| Elongation | 1000% |
| Dielectric Breakdown (Wet or Dry) | 500V/mil (19,7kV/mm) |
| Dielectric Constant | 3.5 |
| Dissipation Factor | 1.0% |
| Water Absorption | 0.15% |
| Water Vapor Transmission Rate | 0.1g/100in2/24hr |
| Ozone Resistance | Pass |
| Heat Resistance | Pass, 130ºC |
| UV Resistance | Pass |
