High-performance double-coated tape with acrylic and silicone adhesives for bonding silicone elastomers, foams, and gaskets. Features exceptional temperature and chemical resistance from -40°F to 250°F. Ideal for gasketing, filtration, and industrial assembly applications.
3M™ Double Coated Tape 9731 is a high-performance industrial adhesive tape specifically engineered for demanding applications involving silicone materials and elastomers. This specialized tape features a unique combination of acrylic and silicone adhesives applied to both sides of a 1 mil clear polyester (PET) carrier, making it ideal for bonding silicone rubber elastomers, foams, and gaskets to a wide range of substrates. The face side is coated with 3M™ Adhesive 350, a high-performance acrylic adhesive that provides exceptional adhesion to diverse materials, while the liner side features a silicone adhesive specifically formulated to bond effectively to silicone substrates.
Developed for industrial and occupational use, this double-coated tape delivers superior performance across multiple demanding applications including gasketing, filtration, and silicone component assembly. The tape operates reliably across an extended temperature range from -40°F to 250°F, providing excellent UV resistance, solvent resistance, and holding power in both high and low temperature environments. The thin, flexible polyester carrier ensures dimensional stability while facilitating easy die-cutting and lamination processes, making it suitable for both manual application and automated dispensing systems.
The dual-liner construction features a 58# polycoated kraft paper (PCK) liner on the primary side and a 3 mil polyester film liner on the secondary side, both of which help reduce edge curl and protect the tape from humidity extremes. With an 18-month shelf life and proven performance in automotive, electronics, marine, and general industrial applications, 3M™ Double Coated Tape 9731 provides instant adhesion for quick assembly processes while maintaining reliable long-term bond strength in harsh operating conditions.
Key Features
- Dual adhesive system with acrylic (face side) and silicone (liner side) for specialized bonding applications
- Exceptional temperature performance operating range from -40°F (-40°C) to 250°F (121°C)
- Superior UV resistance and excellent solvent resistance for harsh industrial environments
- Double-linered construction with polycoated kraft paper and polyester film for reduced edge curl
- Thin 1 mil clear polyester carrier provides dimensional stability and ease of die-cutting and lamination
- Instant adhesion for quick assembly processes with reliable long-term bond strength
- Suitable for both manual application and automated dispensing systems
- Ideal for silicone gaskets, filters, foams, and elastomer bonding applications
Technical Specifications
| Specification |
Value |
| Product Number | 9731 |
| 3M ID | 7100133100 |
| Adhesive Type | Acrylic/Silicone (Face: High Performance Acrylic 350, Back: Silicone) |
| Backing Material | Polyester (PET) |
| Carrier Thickness | 1 mil (0.025 mm) |
| Total Tape Thickness without Liner | 5.5 mil (0.14 mm) |
| Overall Width | 0.315 in (8 mm) |
| Face Side Adhesive Thickness | 1.6 mil (0.041 mm) |
| Back Side Adhesive Thickness | 2.9 mil (0.07 mm) |
| Primary Liner | 58# Polycoated Kraft Paper (PCK), 4.2 mil (0.17 mm) thick, Tan color |
| Secondary Liner | Polyester Film (PET), 3 mil thick |
| Product Color | Transparent/Clear |
| Core Size | 3 in (76.2 mm) |
| Maximum Operating Temperature | 250°F (121°C) |
| Minimum Operating Temperature | -40°F (-40°C) |
| Product Form | Roll |
| Number of Adhesive Sides | Double-sided |
| Shelf Life | 18 months from date of manufacture |
| Indoor/Outdoor Use | Both |
| Smallest Saleable Unit | Roll |
| Industries | Automotive, Electronics, General Industrial, Marine, Metalworking, Transportation, Woodworking |
| Recommended Applications | Gasketing, Filters, Silicone foams and rubber, Silicone keypad attachment, Printer toner cartridge refurbishing |
| Substrate Compatibility | Silicone rubber elastomers, foam, HSE and LSE plastics, various industrial substrates |
| Brand | 3M™ |
| Use Classification | Industrial/Occupational use only - Not for consumer sale or use |
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