3M Scotch Super 33+ Vinyl Electrical Tape (3/4 in x 66 ft) Review (2026)
By Nate Sawyer, Editor · Updated July 2026
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- Electrical insulation
- Outdoor
- Professional
A professional-grade 7-mil PVC electrical tape, UL 510 listed to 600V, for insulating wire splices from 0F to 221F. Its elastic backing conforms tightly and the rubber-resin adhesive resists UV, abrasion, acids, and solvents outdoors. Trade-offs: it costs several times more than economy tape, and it insulates but does not replace connectors.
Pros
- UL 510 listed for up to 600V with flame-retardant, moisture-resistant PVC
- Elastic backing conforms tightly and stays stuck across a wide temperature range
- Rubber-resin adhesive resists UV, abrasion, acids and solvents for outdoor and cold jobs
Cons
- Costs several times more than economy vinyl electrical tape
- Only 3/4 in wide, so it is slow going for large or irregular wraps
- Not a substitute for proper connectors, it insulates but does not make the connection
Specifications
| Type | Professional-grade PVC electrical tape |
|---|---|
| Width | 3/4 in |
| Length | 66 ft |
| Thickness | 7 mil |
| Rated | Up to 600V, 0F to 221F (-18C to 105C) |
| Adhesive | Pressure-sensitive rubber resin |
| Best for | Insulating & protecting wire splices |