Fasson® 957 Packaging Tape
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Long Description
Avery Dennison™ FASSON® 0957 BLACK is a specialty-grade cloth duct tape specifically engineered to meet the rigorous demands of HVAC system installation, particularly for sealing, seaming, and joining Class 1 flex duct systems. This high-performance tape meets UL 181B-FX requirements and is recognized under File No. ALKW.MH14352, making it suitable for code-compliant ductwork in residential, commercial, and industrial buildings.
Designed with an aggressive rubber-based adhesive, FASSON® 0957 BLACK delivers excellent tack and long-term adhesion to low surface energy substrates such as polyethylene, as well as metals like stainless steel. Its polyester/cotton scrim cloth facestock provides superior mechanical strength, flexibility, and easy hand-tearability—making it ideal for contractors and HVAC professionals.
This product is available in both metalized and black finishes to accommodate varying aesthetic or visibility needs in installation environments. It is also engineered to resist mold growth and moisture, ensuring long-lasting performance even in humid and demanding conditions.
Key Features
UL 181B-FX Listed for Class 1 flexible air duct applications
Aggressive rubber adhesive bonds strongly to PE, stainless steel, and duct materials
High tensile strength from polyester/cotton cloth backing
Excellent resistance to mold, moisture, and humidity
Easy to tear by hand – contractor-friendly
Available in black and metalized versions for varied installation environments
Made in the USA
Typical Applications
Sealing and joining Class 1 flex ducts
HVAC system installation and repairs
Connecting air connectors, ductwork, and venting systems
Environments requiring code-compliant, high-shear, mold-resistant solutions
Construction
| Component | Description |
|---|---|
| Facestock | Polyester / Cotton Cloth |
| Adhesive | Rubber-based |
| Liner | Self-wound (no liner) |
| Finish | Available in black or metalized |
Adhesive & Mechanical Properties (Typical Values)
| Property | Value | Test Method |
|---|---|---|
| Adhesive Thickness | 2.1 mils (0.05 mm) | ASTM D3652 |
| Carrier Thickness | 12.0 mils (0.30 mm) | ASTM D3652 |
| Total Caliper | 14.1 mils (0.36 mm / 358 µm) | ASTM D3652 |
| Peel Adhesion (Stainless Steel) | 3.8 lbf/in (669 N/m) | ASTM D3330 |
| Static Shear @150°F (66°C) | > 100 min | ASTM D3654 |
| Tensile Strength (MD) | 27.0 lbf/in (4,755 N/m) | ASTM D882 |
| Elongation (MD) | 10% | ASTM D882 |
Temperature Performance
| Parameter | Value |
|---|---|
| Minimum Application Temp | 50°F (10°C) |
| Maximum Continuous Operating Temp | 200°F (93°C) |
| Minimum Storage Temp | 0°F (-18°C) |
Application Techniques
Ensure the bonding surface is clean, dry, and free of grease or oil
Apply with firm pressure to develop strong adhesive contact
Best results are achieved with full surface contact and dwell time
Compatible with a range of surfaces including PE, stainless steel, duct board, and metal
Storage & Shelf Life
Shelf Life: 1 year from date of manufacture
Storage Conditions: 64–72°F (18–22°C), 30–70% RH
Store in original packaging, out of direct sunlight
Fire & Safety Standards
UL 181B-FX Listed (File No. ALKW.MH14352)
Flame Spread: 15
Smoke Developed: 30
Suitable for applications requiring compliance with building codes and safety regulations
