Scotch 70 Self-Fusing Silicone Electrical Tape 3M
High-performance insulation tape for electrical use
Parameter | 3M™ Scotch® Rubber Mastic Tape 2228 |
Product Overview | Premium-grade, self-fusing (self-amalgamating) EPR rubber mastic tape for high-voltage electrical insulation, moisture sealing, and mechanical padding3M. |
Base Material | Ethylene Propylene Rubber (EPR) backing with mastic adhesive3M. |
Color | Black3M. |
Total Thickness | 65 mil (1.65 mm)3M. |
Voltage Rating | • Up to 1000V for wire/cable splices• Up to 35 kV for busbar connections. |
Operating Temperature | Continuous: 90°C (194°F)Emergency Overload: 130°C (266°F). |
Elongation | Up to 1000%. |
Dielectric Strength | 500 V/mil (19.7 kV/mm) (ASTM D-4325). |
Key Features | • Self-fusing / Self-amalgamating (permanently bonds to itself)• Highly conformable for irregular shapes (bolt heads, busbars)• Excellent moisture & water sealing• UV & weather resistant (indoor/outdoor use)• Temperature stable mastic adhesive• Thick build for quick insulation padding |
Typical Applications | • Primary insulation for 35kV busbars• Insulation/sealing for 1000V cable splices & motor leads• Moisture sealing for underground cables & service drops• Mechanical padding & protection for irregular connections• Jacket repair on power cables |
Standard Sizes | Widths: 25.4 mm (1 in), 50.8 mm (2 in)Length: 3.05 m (10 ft)3M. |
Certifications | UL Recognized (up to 130°C), RoHS compliant3M. |
Shelf Life | 5 years3M. |