3M 8902 High Temperature Polyester Tape | Silicone Adhesive Masking Tape

Benefits

• Creates sharp paint lines during powder coating and other high-temperature finishing processes.

• Helps reduce adhesive residue and transfer during removal.

• Supports reliable masking in industrial processes involving heat and chemicals.

• Helps protect surfaces from scratches during handling and transportation.

• Enables splicing of silicone-treated liners, films, and papers.

• Offers a practical solution for applications that require a thicker polyester tape.

Technical Specifications

Property	Typical specification
Product	3M™ Polyester Tape 8902
Backing material	Polyester film
Adhesive type	Silicone
Color	Blue, translucent
Backing thickness	Approximately 0.05 mm
Total tape thickness	Approximately 0.09 mm
Temperature resistance	-50°C to 204°C
Elongation at break	140% (typical)
Standard roll length	Approximately 65.8 m
Available widths	Multiple widths, depending on product configuration
Release liner	No liner
Product format	Roll

Note: Values are typical reference data, not guaranteed specifications. Confirm the applicable regional 3M technical data sheet and exact product configuration before final specification or purchase.

Applications

• Powder coating masking

• High-temperature paint masking

• Anodizing and metal finishing

• Splicing silicone-treated release liners

• Splicing silicone-treated films and papers

• Composite bonding and vacuum bagging support

• Flash breaking during metal bonding

• Chemical milling masking

• Temporary surface protection during shipping and handling

• Separation of dissimilar metals during processing

Compatible Materials

• Stainless steel

• Anodized aluminum

• Glass

• Silicone-treated release liners

• Silicone-treated films and papers

• Selected metal surfaces

• Composite processing materials

Adhesion and clean removal depend on surface condition, temperature, dwell time, and the specific process. Test on the intended substrate before production use.

Industries

• Automotive manufacturing

• Appliance manufacturing

• Electronics manufacturing

• Metal fabrication and finishing

• General industrial manufacturing

• Composite manufacturing

• Construction and transportation

• Specialty vehicle manufacturing

• Printing and converting

Why Choose 3M 8902 Polyester Tape?

3M 8902 combines a polyester film backing with heat-resistant silicone adhesive for high-temperature masking and industrial processing. Compared with thinner polyester tapes such as 3M 8901, its thicker construction provides additional durability for applications that demand stronger handling performance.

For manufacturers and converters, Yousan can help assess tape suitability for industrial applications and discuss converting requirements such as slit widths and die-cut formats, subject to material availability and technical review.

Installation Guide

1. Prepare the surface: Ensure the surface is clean, dry, and free from oil, dust, and loose particles.

2. Confirm compatibility: Test adhesion and removal on the actual substrate and process materials.

3. Apply the tape: Position the tape carefully and press it down to achieve consistent contact, especially along edges.

4. Check masking edges: Ensure the tape follows the required masking boundary without wrinkles or gaps.

5. Follow process conditions: Use within the validated temperature, dwell-time, and chemical-exposure limits for your application.

6. Remove after processing: Allow the part to reach a safe handling temperature when required, then remove the tape steadily to minimize tearing or residue.

Storage

• Store in a clean, dry environment.

• Keep away from direct sunlight, excessive heat, and moisture.

• Retain the tape in its original packaging until use.

• Avoid crushing, bending, or contaminating the adhesive surface.

• Follow the storage and shelf-life recommendations provided in the applicable 3M documentation.

FAQ

Q1: What is 3M 8902 polyester tape used for?
It is primarily used for high-temperature masking, including powder coating, metal finishing, and splicing silicone-treated liners, films, and papers.

Q2: What is the maximum temperature resistance of 3M 8902?
3M lists a temperature range extending up to 204°C (400°F). Actual performance depends on exposure duration, substrate, and process conditions.

Q3: What adhesive does 3M 8902 use?
It uses silicone adhesive, which is designed to provide heat resistance and adhesion to certain difficult-to-bond surfaces.

Q4: Is 3M 8902 suitable for powder coating?
Yes. It is designed for high-temperature masking applications such as powder coating and can help create clean paint boundaries when correctly applied.

Q5: Can 3M 8902 adhere to silicone-treated release liners?
Yes. Its silicone adhesive is designed for applications involving silicone-treated liners, films, and papers. Confirm performance with the specific material and process.

Q6: What is the difference between 3M 8901 and 3M 8902?
3M 8902 has a thicker polyester backing and greater total thickness than 3M 8901, making it suitable for applications requiring additional durability.

Q7: Can 3M 8902 be converted into custom widths or shapes?
Converting may be possible depending on material availability and project requirements. Confirm the requested dimensions, quantities, tolerances, and application before proceeding.

Q8: Does 3M 8902 leave adhesive residue after heating?
It is designed for clean removal in suitable high-temperature masking applications. Results depend on the substrate, bake conditions, dwell time, and removal procedure, so application testing is recommended.

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Downloads

Available upon request:

• 3M 8902 Polyester Tape Technical Data Sheet (TDS)
• Safety Data Sheet (SDS)
• Adhesive Tape Selection Guide
• Product Brochure
• Die-Cutting Capability Guide

Please contact our sales team if you require the latest technical documentation.