High-performance dual-adhesive industrial tape with acrylic and silicone adhesives for bonding silicone materials, gaskets, and foam components with exceptional temperature and chemical resistance.
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 dual-adhesive system with acrylic adhesive on the face side and silicone adhesive on the liner side, bonded to a flexible 1 mil clear polyester film (PET) carrier. The combination of these complementary adhesives makes it ideal for gasketing applications, filter assembly, and bonding silicone foams and rubber components to a wide range of substrates.
The tape's exceptional performance characteristics include outstanding temperature resistance ranging from -40°F to 250°F (-40°C to 121°C), excellent chemical and solvent resistance, superior UV stability, and reliable holding power across diverse industrial applications. The 3M™ Adhesive 350 on the face side provides exceptional adhesion to multiple material types, while the silicone adhesive on the back ensures excellent bonding to silicone rubber and HSE/LSE materials. With a total thickness of 5.5 mil and dimensions of 9 inches wide by 36 yards long, this roll comes packaged as a single roll per case for convenient handling and storage.
This industrial-grade tape is protected by dual liners—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 provide reliable performance for die-cutting and automated dispensing applications. The double-linered design helps reduce edge curl and protects the tape from humidity extremes, ensuring consistent performance in manufacturing environments. Ideal for pre-application to gasket materials, instant adhesion capabilities, and applications requiring both bonding and sealing simultaneously, this tape is essential for aerospace, automotive, electronics, medical device, and general industrial manufacturing.
Key Features
- Dual-adhesive system with acrylic on face side and silicone on liner side for specialized bonding applications
- Exceptional temperature resistance from -40°F to 250°F (-40°C to 121°C) for extreme environment applications
- Superior chemical and solvent resistance with excellent UV stability for long-term durability
- Double-linered design with 58# polycoated kraft paper and 3 mil polyester film for reduced edge curl and humidity protection
- Ideal for gasketing, filters, silicone foams, and automated die-cutting and dispensing applications
Technical Specifications
| Specification |
Value |
| Product Number | 3M™ Double Coated Tape 9731 |
| Overall Width | 9 inches (228.6 mm) |
| Overall Length | 36 yards (32.91 meters) |
| Total Thickness | 5.5 mil (0.14 mm) without liner |
| Carrier Material | 1 mil clear polyester film (PET) |
| Face Side Adhesive | High Performance Acrylic Adhesive 350 (1.6 mil / 0.041 mm) |
| Back Side Adhesive | Silicone adhesive (2.9 mil / 0.07 mm) |
| Primary Liner | 58# polycoated kraft paper (PCK), 4.2 mil, Tan color |
| Secondary Liner | 3 mil polyester film (PET), transparent |
| Core Size | 3 inches (76.2 mm) |
| Operating Temperature Range | -40°F to 250°F (-40°C to 121°C) |
| Product Color | Transparent/Clear |
| Tape Type | Double-sided adhesive tape |
| Assembly Type | Gasket attachment and bonding |
| Number of Adhesive Sides | Double-sided |
| Shelf Life | 18 months from date of manufacture |
| Units per Case | 1 roll |
| Product Form | Roll |
| Smallest Saleable Unit | Roll |
| Indoor/Outdoor Rating | Both indoor and outdoor applications |
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