PET Fiberglass Cloth Tape (F-390)
PET Fiberglass Cloth Tape for Motor Winding, Transformer Insulation, Coil Banding & Lead Wire Anchoring
PET Fiberglass Cloth Tape is a polyester-based electrical insulation tape laminated with fiberglass cloth and coated with acrylic pressure-sensitive adhesive. It combines high tensile strength, low elongation, and stable insulation performance for demanding electrical applications.
This tape is widely used in motor winding, transformer insulation, lead wire anchoring, coil banding, crossover insulation, and generator coil wrapping. It is suitable for applications that require both mechanical reinforcement and dependable electrical insulation.
For special applications, customized widths, converted parts, and application-specific adhesive options may be available on request.
Overview
PET Fiberglass Cloth Tape uses a polyester film and fiberglass cloth composite backing to deliver both electrical insulation and mechanical reinforcement.
The construction provides strong holding power, puncture resistance, tear resistance, and dimensional stability during winding and banding operations. Compared with lighter electrical insulation tapes, this structure is better suited to higher-stress coil applications where stronger anchoring and stable wrapping are required.
Typical use areas include:
- motor winding
- transformer coil insulation
- lead wire anchoring
- coil banding
- crossover insulation
- generator coil wrapping
- wire harness winding
- electrical equipment assembly
Key Features & Benefits
High Tensile Strength
The fiberglass cloth construction provides strong longitudinal strength for coil cover, anchor, banding, and other reinforcement uses.
Low Elongation
Low elongation helps maintain winding tension and reduces slippage during coil wrapping and lead anchoring.
Reliable Electrical Insulation
The polyester and fiberglass cloth composite offers stable insulation performance for motors, transformers, generators, and related electrical assemblies.
High Temperature Resistance
Suitable grades can withstand elevated-temperature electrical insulation applications and curing cycles.
Solvent Resistance
The acrylic adhesive system offers good resistance to common industrial environments and supports electrical insulation use.
Converting Flexibility
Available in slit rolls, sheets, and converted parts for different winding, banding, and assembly requirements.
Technical Datasheet Summary
DESCRIPTION
PET fiberglass cloth electrical insulation tape with acrylic adhesive for coil cover, lead wire anchoring, banding, and crossover insulation. It combines high tensile strength, low elongation, and reliable insulation performance for motors, transformers, and generator windings.
STORAGE AND SHELF LIFE
Store in original packaging at 10–27°C and below 75% relative humidity, away from direct sunlight and heat sources. Under these conditions, shelf life is 12 months from the date of manufacture unless otherwise validated by SKU.
Typical Applications
Motor Winding
Used for motor winding, end-turn wrapping, and coil reinforcement where stronger mechanical holding is required.
Transformer Insulation
Used in transformer coil insulation, lead stabilization, and banding applications.
Lead Wire Anchoring
Helps secure lead wires and reduce movement during winding and assembly.
Coil Banding & Crossover Insulation
Suitable for coil banding, crossover insulation, and core layer applications in electrical winding systems.
Generator Coil Wrapping
Provides stable wrapping and reinforcement for generator coils during production and assembly.
Wire Harness Winding
Can also be used in wire harness winding and electrical fastening applications where insulation and durability are needed.
For motor windings, transformer coils and generator insulation, see our Motor & Transformer Insulation guide for material selection by insulation position, winding tension, temperature class and varnish compatibility.
Technical Specifications
Typical product properties are shown below.
| Item | Specification |
| Product Name | PET Fiberglass Cloth Tape |
| Model | F-390 |
| Backing Material | Polyester + Fiberglass Cloth |
| Adhesive Type | Acrylic |
| Color | White |
| Total Thickness | 0.16 mm |
| Tensile Strength | 1000 N/inch |
| Elongation at Break | 5% |
| Adhesion to Steel (90°) | 12 N/inch |
| Temperature Resistance | Up to 155°C (Class F) |
Note: The data shown are typical values obtained by standard test methods and are provided for reference only. They should not be considered product specifications. Actual performance should be verified under specific conductors, insulating materials, winding processes, insulation systems, and end-use conditions.
Storage and Shelf Life
Store in the original packaging at 10–27°C and below 75% relative humidity, away from direct sunlight, heaters, and other heat sources.
Under these conditions, the typical shelf life is 12 months from the date of manufacture, unless otherwise validated for a specific SKU.
Quality & Traceability
Each production batch should be checked for key properties relevant to industrial procurement and qualification, including:
- thickness
- tensile strength
- adhesion
- elongation
- appearance and roll condition
Batch traceability can be maintained to support industrial quality management and customer qualification requirements.
Downloads
Available documentation may include:
Download TDS (PDF)
View All Datasheets
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FAQ
What is PET Fiberglass Cloth Tape used for?
Is this tape suitable for high-temperature electrical applications?
Can it be used for transformer applications?
What units are used for tensile and adhesion values?
Are custom widths or converted formats available?
How is this different from filament reinforced electrical tape?
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