3M™ 69 Glass Cloth Electrical Tape is a white glass cloth tape with a high-temperature thermosetting silicone adhesive. The thermosetting adhesive provides an increased bond once applied in areas of high ambient temperatures. 69 Tape is UL recognized for continuous use up to 200°C. It conforms to Military Specification No. MIL-I-19166C.
The 3M 69 Glass Cloth Electrical Tape is a white glass‑cloth tape featuring a high‑temperature thermosetting silicone adhesive. It is UL‑recognized for continuous use up to 200 °C and complies with Military Specification MIL‑I‑19166C, making it suitable for demanding high‑heat applications.
Typical applications include insulating furnace power leads, securing high‑temperature insulations, and reinforcing insulation in heavy‑load electrical installations. The sheet also lists key physical and electrical properties, test methods, and warranty information.
| Thickness | 7.0 mils (.177 mm) |
|---|---|
| Tensile Strength | 180 Ibs./in (314 N/10mm) |
| Elongation at Break | 5 % |
| Electrical Strength | 3000 V |
| Insulation Resistance | 4.8 × 10⁶ Ω |
The tape is UL‑recognized for continuous use up to 200 °C.
It conforms to Military Specification No. MIL‑I‑19166C.
It is used for insulating furnace power leads, securing high‑temperature insulations, and reinforcing insulation in heavy‑load electrical installations.