125μm PET Film for Motor Insulation
125μm PET Film for Motor Insulation from Jinlu Film is a hazy polyester film built for high-voltage motor insulation, where 18.7 kV of dielectric strength is the deciding factor. At this thickness the film also shows noticeably lower thermal shrinkage — 1.1% MD and 0.4% TD — so it stays dimensionally stable through heat cycling in motors that run hot. The hazy matte surface keeps grip during insertion, and the 236/230 MPa tensile strength gives it enough stiffness to hold position inside the slot.
Key Specifications
| Thickness | 125μm |
| Surface | Hazy / matte |
| Tensile strength | MD 236 MPa / TD 230 MPa |
| Elongation at break | MD 159% / TD 154% |
| Thermal shrinkage at 150°C, 30 min | MD 1.1% / TD 0.4% |
| Breakdown voltage | 18.7 kV |
| Volume resistivity at 20°C | 5E+17 Ω·cm |
| Dissipation factor at 20°C, 1 kHz | 43 |
| UL746B RTI | Electrical 105°C / Mechanical 105°C |
Applications
Motor slot liner, motor wedge, die-cut insulation, interlayer insulation in motors and generators, and general electrical insulation.
Target industries: electric motor manufacturing, generator assembly, electrical and electronic manufacturing, and industrial insulation.
Why Choose Jinlu Film for PET Film for Motor Insulation
- 18.7 kV breakdown voltage for high-voltage motor builds
- Lower thermal shrinkage for dimensional control under heat
- Hazy surface for grip during insertion
- UL746B RTI 105°C electrical / mechanical
- Custom width and roll length
- Export-grade packing and global shipping support
Other Thicknesses for Motor Insulation
Choose the thickness that fits your slot or wedge: 50μm, 75μm, 100μm, 188μm, 210μm, 250μm, 300μm, 350μm and 500μm.
Guides
See our PET motor insulation film guide, and learn how to read a datasheet in Toray Lumirror S10 PET film explained. All films are in the PET film category.
