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3M™ Tape 70 (7000031081, 7000006225) is a high-performance Self-Fusing Tape. It’s made from thick, inorganic silicone rubber for superior electrical insulation in high-voltage, high-temperature environments. With its excellent arc and track resistance, 3M Tape 70 is ideal for insulating and sealing bus bars, terminations and splices. This conformable, non-adhesive Scotch Tape 70 fuses instantly, delivering long-lasting protection across a wide range of industrial and utility applications.
Part Numbers: 7000031081, 7000006225.
Designed for electrical insulation, sealing and overwrapping in extreme conditions, Scotch 70 provides excellent dielectric strength and thermal stability. Its thick silicone rubber backing and self-amalgamating design ensure rapid build-up and durable performance over irregular shapes. Whether you’re wrapping motor leads or sealing high-voltage terminations, 3M 70 offers dependable protection against UV, moisture and chemical exposure.
Self-fusing silicone rubber construction for clean, adhesive-free application
Excellent insulation and sealing for high-voltage cables and bus bars
Withstands extreme temperatures up to 180℃ (356℉)
Outstanding arc and track resistance for exposed environments
Rated up to 34 kV/mm dielectric strength with high elongation
Conforms easily to irregular surfaces and tight spaces
UV- and chemical-resistant for rugged outdoor performance
RoHS 2011/65/EU compliant
Suitable for industrial, utility, automotive, marine, and renewable sectors
Available in 25 mm and 25.4 mm widths, 9.1 m (30 ft) rolls
Supplied in individual rolls for efficient field use
From utility substations to offshore platforms, 3M 70 delivers robust electrical insulation when failure isn’t an option. Its instant fusion eliminates the need for pressure or adhesives, while the tough silicone composition protects against harsh environmental and electrical stressors. Whether you’re insulating wind turbine connections or overwrapping termination points, Tape 70 offers reliability, speed and long-term stability.
When durability and safety are critical, trust 3M Tape 70 and its proven Scotch technology to protect your electrical infrastructure in the world’s toughest conditions.
For Additional Information on 3M Scotch Self-Fusing Silicone Rubber Electrical Tape 70 (7000031081, 7000006225), please consult the Technical Data Table or PDF File below.
*Technical Data subject to change without notice.
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| TYPICAL PROPERTIES | |
|---|---|
| Adhesive Type | Application/ Industry |
| Adhesive TypeNon-Adhesive | Application/ IndustryAutomotive and Marine, Commercial Construction, Industrial Construction, Irrigation, Maintenance and Repair Operations, Mining, Solar, Wind Power, Appliance and Fixture, Utility |
| TYPICAL PROPERTIES - CONTINUED | |
| Min Operating Temp (℃) | Product Colour |
| Min Operating Temp (℃)0℃ | Product ColourGrey, Sky Blue |
| PHYSICAL PROPERTIES | |
| Thickness ASTM D1000-76 | Tensile Strength ASTM D1000-76 |
| Thickness ASTM D1000-760.3 mm | Tensile Strength ASTM D1000-7621.02 N/10 mm |
| ELECTRICAL PROPERTIES | |
| Dielectrical Strength ASTM D1000-76 | Arc Resistance ASTM D1000-76 |
| Dielectrical Strength ASTM D1000-7634 kV/mm | Arc Resistance ASTM D1000-761 min. (minimum) |
| DIMENSIONS AND CLASSIFICATIONS | |
| Overall Length (ft) | Overall Length (mm, m) |
| Overall Length (ft)30 | Overall Length (mm, m)9.1, 457 |
