Scotch 27 Glass Cloth Electrical Tape is a woven glass cloth tape designed to operate in 600-volt dry applications requiring high mechanical strength and resistance to high temperatures.
Scotch® 27 Glass Cloth Electrical Tape is a woven glass‑cloth tape designed for 600‑volt dry applications that need high mechanical strength and resistance to high temperatures. The pressure‑sensitive rubber thermosetting adhesive provides heat‑stable insulation and the tape is white, 7 mil thick, and does not shrink, rot, or burn.
The tape is used for insulating furnace power leads, securing high‑temperature systems, splicing 130 °C‑rated wire, and reinforcing insulation in heavy‑load electrical installations. It is available in 1/2 in × 66 ft and 3/4 in × 66 ft sizes, with other dimensions on request, and has a three‑year shelf life when stored at 70 °F and 40‑50 % RH.
| Color | White |
|---|---|
| Total Thickness | 7.0 mil (0.177 mm) |
| Tensile Strength | 150 lb/in (26 kg/cm) |
| Adhesion to Steel | 40 oz/in (0.44 kg/cm) |
| Operating Temperature | 130 °C (Class B 266 °F) |
| Shelf Life | 3 years (stored at 70 °F, 40‑50 % RH) |
| UL Recognition | UL Standard 510 |
It performs at a temperature of 130 °C (Class B 266 °F) without loss of physical or electrical properties.
It is sold in 1/2 in × 66 ft and 3/4 in × 66 ft, with other lengths and widths available by special request.
The tape has a three‑year shelf life when stored in a clean, dry place at 70 °F and 40‑50 % relative humidity.