Benefits
High-Temperature Performance
3M™ Glass Cloth Tape 3615 can operate from approximately -54°C to 232°C for long-term applications and can withstand intermittent temperatures up to approximately 288°C, depending on the type and duration of heat exposure.
High Tensile Strength
The woven glass cloth backing provides a typical tensile strength of approximately 315.2 N/cm (180 lb/in), making the tape suitable for demanding bundling, holding, reinforcement, and sealing applications.
Abrasion Resistance
The strong glass cloth backing is designed to withstand mechanical wear and handling, making 3615 suitable for industrial environments where durability is important.
Reliable Silicone Adhesion
The silicone adhesive provides good holding power and long-aging performance over a broad temperature range.
Permanent Sealing
The combination of high-strength glass cloth and silicone adhesive makes 3615 suitable for permanent sealing of high-temperature ducts and chambers.
Easy Unwind
3M specifically describes 3615 as an easy-unwind tape, helping simplify manual application and improve production efficiency.
Technical Specifications
| Property | 3M™ General Purpose Glass Cloth Tape 3615 |
|---|---|
| Product Type | General Purpose Glass Cloth Tape |
| Backing | Glass Cloth |
| Adhesive | Silicone |
| Color | White |
| Backing Thickness | 0.13 mm (5 mil) |
| Total Tape Thickness | 0.18 mm (7 mil) |
| 180° Peel Adhesion | 3.8 N/cm (35 oz/in) |
| Tensile Strength | 315.2 N/cm (180 lb/in) |
| Elongation at Break | 7% |
| Long-Term Temperature Resistance | 232°C (450°F) |
| Short-Term Temperature Resistance | 288°C (550°F) |
| Standard Roll Length | 36 yd (33 m) |
| Backing Construction | Woven Fiberglass |
These are typical values, not specifications. Actual product performance should be verified against the latest applicable 3M technical documentation.
3M currently lists multiple width configurations, including 0.5, 0.75, 1, 1.5, 2, 3 and 4 inches, depending on the specific product configuration and market.
Applications
High-Temperature Duct Sealing
3M™ Glass Cloth Tape 3615 is designed for the permanent sealing of high-temperature ducts and chambers, where strong adhesion and temperature resistance are required.
Wire Harnessing
The strong glass cloth backing makes 3615 suitable for bundling and holding wires and wire harnesses in industrial applications.
High-Temperature Bundling
It can be used for bundling components where conventional cloth or plastic tapes may not provide sufficient tensile strength or temperature performance.
Welding Applications
3M identifies 3615 as a suitable backup strip for submerged arc welding applications.
Reinforcement and Holding
The high tensile-strength backing can provide reinforcement and temporary or permanent holding for selected industrial components.
Surface Protection
The abrasion-resistant glass cloth construction can help protect surfaces and components from mechanical wear during handling or operation.
Compatible Materials
Depending on the application and surface condition, 3M™ General Purpose Glass Cloth Tape 3615 may be used with:
- Stainless steel
- Steel
- Aluminum
- Metal ducts
- Industrial equipment
- Electrical wires and cables
- Fiberglass
- Industrial insulation
- Composite materials
- High-temperature chambers
- Industrial fabrics
For critical applications, surface compatibility should be validated under the actual operating temperature, pressure, chemical exposure, and dwell-time conditions.
Industries
3M™ General Purpose Glass Cloth Tape 3615 can be used in:
- Automotive
- Aerospace
- Electrical & Electronics
- HVAC
- Industrial Equipment
- Wire & Cable
- Metal Fabrication
- Welding
- Appliance Manufacturing
- Energy
- Construction
- Manufacturing & Maintenance
Why Choose 3M™ General Purpose Glass Cloth Tape 3615?
3M™ General Purpose Glass Cloth Tape 3615 combines a high-strength woven glass cloth backing with a silicone pressure-sensitive adhesive, providing a balance of mechanical strength, temperature resistance, adhesion, and abrasion resistance.
Its key advantages include:
- High tensile strength
- Strong abrasion-resistant backing
- High-temperature capability
- Reliable silicone adhesive
- Good long-term holding power
- Easy unwind
- Permanent sealing capability
- Suitable for wire harnessing
- Suitable for industrial bundling
- Thicker construction than 3M™ Glass Cloth Tape 361
For industrial users looking for a high-temperature fiberglass tape with strong holding power, 3615 is a versatile option.
3M™ 3615 vs. 3M™ 361
The two products are closely related.
| Feature | 3M™ Glass Cloth Tape 3615 | 3M™ Glass Cloth Tape 361 |
|---|---|---|
| Backing | Glass Cloth | Glass Cloth |
| Adhesive | Silicone | Silicone |
| Total Thickness | 0.18 mm | Thinner |
| Mechanical Strength | Higher | Lower |
| Temperature Resistance | Up to 232°C long-term | Application dependent |
| Main Advantage | Stronger/thicker construction | More flexible/thinner construction |
3M specifically describes 3615 as the thicker version of 3M™ Glass Cloth Tape 361.
Installation Guide
Step 1: Clean the Surface
Remove dust, oil, grease, moisture, and other contaminants from the substrate.
Step 2: Select the Correct Width
Choose a tape width that provides sufficient overlap and coverage for the intended application.
Step 3: Apply the Tape
Position the tape carefully and apply it smoothly. Avoid wrinkles, folds, and unnecessary stretching.
Step 4: Apply Pressure
Press the tape firmly against the surface to maximize adhesive contact.
Step 5: Inspect the Edges
Check that the tape is firmly bonded and that there are no lifted edges or gaps.
Step 6: Test Under Operating Conditions
For new applications, validate adhesion, tensile performance, temperature resistance, and durability under actual operating conditions.
Storage
For best performance:
- Keep the tape in its original packaging.
- Store in a clean and dry environment.
- Protect from direct sunlight.
- Avoid excessive heat and moisture.
- Keep away from chemicals and contaminants.
- Avoid crushing or deforming rolls.
- Follow the latest 3M storage and shelf-life recommendations for the applicable product configuration.
FAQ
What is 3M™ General Purpose Glass Cloth Tape 3615?
It is a woven glass cloth tape with silicone adhesive designed for high-temperature applications requiring high tensile strength, strong adhesion, and abrasion resistance.
Is 3M™ 3615 heat resistant?
Yes. It is rated for approximately -54°C to 232°C (-65°F to 450°F) and can withstand intermittent temperatures up to approximately 288°C (550°F) or higher depending on exposure conditions.
What is 3M™ Glass Cloth Tape 3615 used for?
Typical applications include high-temperature duct sealing, wire harnessing, bundling, holding, and backup strips for submerged arc welding.
Is 3M™ 3615 a fiberglass tape?
Yes. Its backing is made from woven glass cloth/fiberglass, which provides high tensile strength and abrasion resistance.
Is 3M™ 3615 suitable for electrical applications?
It can be used in certain electrical and wire-harnessing applications. However, the specific voltage, insulation, temperature, and regulatory requirements should be evaluated before use.
Can 3M™ 3615 be used on metal?
Yes. It can be used on suitable metal surfaces such as steel, stainless steel, and aluminum when the surface is properly prepared.
Can 3M™ 3615 be die-cut?
Glass cloth tape can be converted into custom shapes depending on the required geometry and converting process. For precision die-cut applications, the tape construction and tooling should be evaluated beforehand.
Can 3M™ 3615 be slit into narrow widths?
Yes. 3615 is available in multiple widths, and industrial tape converters may also provide custom slit-width formats depending on the source roll and requirements.
What is the difference between 3M 3615 and 3M 361?
3M 3615 is the thicker version of 3M Glass Cloth Tape 361. The additional thickness provides a more robust construction for applications requiring greater mechanical strength.
What color is 3M™ Glass Cloth Tape 3615?
The standard product is white.
Downloads
Available upon request:
- 3M General Purpose Glass Cloth Tape 3615 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.
