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3M 69

3M 69

3M Glass Cloth Electrical Tape 69 is a white, 7-mil (0.178 mm) thick tape composed of a 5-mil (0.127 mm) glass cloth backing coated on one side with a non-corrosive, high-temperature, flame retardant, thermosetting silicone pressure-sensitive adhesive.

3M 69 is a premium grade, edge tear-resistant, electrical tape. This printable tape has a non-corrosive adhesive and offers solvent-resistant protection. It is used as a coil cover, an anchor, a banding, a core, a layer, and a crossover insulator. The flame retardant tape is suitable for 600V rated, dry location application motors and transformers.

Data Sheet
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3M 69 Data Sheet

Physical PropertiesValue Imperial (Metric)
Color - VisualWhite
AdhesiveThermosetting Silicone
BackingGlass Cloth
Mechanical PropertiesValue Imperial (Metric)
Backing Thickness - Nominal5 mil (0.127 mm)
Total Thickness17.0 +/- 1.0 mils
(0.178 +/- 0.025 mm)
Adhesion to Steel1 - Minimum30 oz/in (3.3 N/cm)
Breaking Strength1 - Minimum150 lb/in (263 N/cm)
Flame Retardant– UL 510Pass
Electrical PropertiesValue Imperial (Metric)
Comparative Tracking Index (CTI)3I
Dielectric Breakdown1- Minimum2000 V
Electrolytic Corrosion Factor20.9
Insulation Resistance1 – Minimum (High Humidity Method)50x106 Ω

3M 69 Features

  • 3M 69 Glass Cloth Electrical Tape features a pressure-sensitive, high-temperature, thermosetting, silicone adhesive that offers excellent bonding once adhered.
  • This conformable tape has a glass cloth backing that resists rotting and shrinking while providing excellent stability.
  • It withstands a temperature range of 32 to 392 °F (0 to 200 °C). 

3M 69 Applications

  • Insulating electric and induction-type furnace power supply leads
  • Securing high-temperature, non-PSA insulations (such as asbestos and glass) in high-temperature areas
  • Securing Scotch 77 Fire Retardant Electric Arc Proofing Tape
  • Re-insulation and repair of mining machine coil.
  • For a variety of coil/transformer and motor applications, including wrapping of wound coils, winding with mandrel, lead pad compaction, end turns, and lead anchoring and connection.
  • Cutting or slitting to the length and width required by the customers
  • Laminate liner or other materials
  • Die cut according to customer's drawing

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