1. All 3M Products

3M™ TufQUIN Insulating Paper

Typical Properties
Attribute Name
Dry-Type Transformer, Motor/Generator, Other
Laminate, Pure Paper
Electrical Insulation System Thermal Class
Flexible Insulation Product
TufQUIN Inorganic-Organic Hybrid Insulating Papers and Laminates
Insulation Construction
Paper Laminate, Pure Paper
Mechanical Strength
Best, Better
Overall Thickness (Imperial)
10 mil, 15 mil, 3 mil, 5 mil, 7 mil, 7.5 mil
Overall Thickness (Metric)
127 micron, 178 micron, 190 micron, 254 micron, 381 micron, 76 micron
Product Type
Electrical Insulation Paper
RoHS 2011/65/EU Compliant
RoHS EU Comments
RoHS 2011/65/EU compliant without exemption
Thermal Conductivity
Better, Good
Total Thickness
10 mil, 15 mil, 3 mil, 5 mil, 6 mil, 7 mil, 7.5 mil
  • Mechanical strength suitable for rigorous winding applications
  • Offers excellent thermal conductivity, long-term voltage endurance and low moisture absorption
  • Ideal for dry-type transformers, traction motors, generators, wire and cable wrap, battery separators, spiral and convolute tubing applications
  • Compatible with commonly used impregnating resins and varnishes
  • Suitable for high-temperature electrical insulation applications rated up to Class 200(N)
  • Found in 3M UL Recognized Insulation Systems

3M™ TufQUIN™ Inorganic Hybrid Insulating Paper provides excellent thermal stability and long term voltage endurance. This highly flexible paper is ideal for high performance electrical applications. It provides low moisture absorption and exhibits low moisture content, even under high humidity conditions. 3M™ TufQUIN™ Inorganic Hybrid Insulating Paper exhibits high thermal conductivity and coil bonding characteristics when impregnated. This flexible paper offers enhanced toughness and resists tears, making it suitable for use in more rigorous winding applications. This highly conformable paper maintains a high percentage dielectric strength and is ideal for use in dry type transformers, coils, reactors, wire and cable wrap, pressure sensitive tapes, spiral and convolute tubing.

It is suitable for Class 200(N) electrical insulation systems and 3M UL Recognized Insulation Systems may be found in UL File No. 65007. REACH Compliant and RoHS 2011/65/EU Compliant‎‎.