Professional-grade double-coated adhesive tape with acrylic and silicone adhesives for bonding silicone materials, elastomers, and foams. Features exceptional temperature and chemical resistance from -40°F to 250°F. Ideal for gasketing, filters, and specialized industrial applications.
3M™ Double Coated Tape 9731 is a high-performance adhesive tape specifically designed for demanding applications requiring the bonding of silicone materials to various substrates. This professional-grade tape features a unique dual-adhesive system combining a high-performance acrylic adhesive (3M™ Adhesive 350) on the face side with a specialized silicone adhesive on the liner side. The tape is constructed with a 1 mil clear polyester film (PET) carrier that provides excellent dimensional stability and superior handling characteristics. This innovative design makes it ideal for gasketing, filter assembly, and silicone foam attachment applications across aerospace, automotive, electronics, and medical device manufacturing industries.
The tape's exceptional performance characteristics include outstanding temperature and chemical resistance, with operating temperatures ranging from -40°F to 250°F (-40°C to 121°C). The silicone adhesive on the back side provides superior bonding to silicone rubber and elastomers, while the acrylic adhesive on the face side ensures excellent adhesion to a wide variety of materials including HSE and LSE plastics. The double-lined construction features a 58# polycoated kraft paper (PCK) primary liner and a 3 mil polyester film secondary liner, both engineered to reduce edge curl and protect against humidity extremes while facilitating die-cutting and automated dispensing processes.
With a total thickness of 5.5 mil and dimensions of 38 inches width by 108 yards length, this product delivers reliable performance for industrial applications including air and liquid filters, fluid handling equipment, heat exchangers, and specialized gasketing solutions. The tape provides instant adhesion, excellent holding power, very good solvent resistance, and superior UV resistance. It is particularly valuable for pre-applied gasketing applications where parts can be die-cut after tape application, and for replacing or bonding gaskets while simultaneously sealing. This industrial-grade product is intended for trained occupational users only and is not for consumer sale or use.
Key Features
- Dual adhesive system with acrylic (face side) and silicone (back side) adhesives for specialized bonding
- 3M™ Adhesive 350 provides exceptional temperature and chemical resistance up to 250°F
- Silicone adhesive bonds exceptionally well to silicone rubber, elastomers, and specialized substrates
- 1 mil clear polyester film carrier provides dimensional stability and superior handling
- Double-lined construction with polycoated kraft paper and polyester film for reduced edge curl
- Excellent UV resistance and very good solvent resistance for demanding environments
- Instant adhesion and superior holding power across temperature extremes
- Ideal for pre-applied gasket applications and die-cutting processes
- Compatible with automated dispensing equipment and manual application
- Operating temperature range from -40°F to 250°F (-40°C to 121°C)
Technical Specifications
| Specification |
Value |
| Product Number | 9731 |
| Part Number | 9731 |
| 3M ID | 7000049118 |
| UPC Code | 00051138955687 |
| Overall Width (Imperial) | 38 inches |
| Overall Width (Metric) | 965.2 mm |
| Overall Length (Imperial) | 108 yards |
| Overall Length (Metric) | 98.75 meters |
| Overall Thickness (Imperial) | 5.5 mil |
| Total Tape Thickness without Liner (Metric) | 0.14 mm |
| Backing/Carrier Material | Polyester Film (PET) |
| Carrier Thickness (Imperial) | 1 mil |
| Carrier Thickness (Metric) | 0.025 mm |
| Face Side Adhesive Type | High Performance Acrylic Adhesive 350 |
| Face Side Adhesive Thickness (Imperial) | 1.6 mil |
| Face Side Adhesive Thickness (Metric) | 0.041 mm |
| Back Side Adhesive Type | Silicone |
| Back Side Adhesive Thickness (Imperial) | 2.9 mil |
| Back Side Adhesive Thickness (Metric) | 0.07 mm |
| Primary Liner Material | 58# Polycoated Kraft Paper (PCK) |
| Primary Liner Thickness (Imperial) | 4.2 mil |
| Primary Liner Thickness (Metric) | 0.17 mm |
| Primary Liner Color | Tan |
| Secondary Liner Material | Polyester Film |
| Secondary Liner Thickness (Imperial) | 2.9 mil |
| Secondary Liner Thickness (Metric) | 0.07 mm |
| Secondary Liner Color | Transparent |
| Product Color | Transparent/Clear |
| Product Form | Roll |
| Core Size (Imperial) | 3 inches |
| Core Size (Metric) | 76.2 mm |
| Tape Type | Double Coated |
| Assembly Type | Gasket Attachment |
| Maximum Operating Temperature (Fahrenheit) | 250°F |
| Maximum Operating Temperature (Celsius) | 121°C |
| Minimum Operating Temperature (Fahrenheit) | -40°F |
| Minimum Operating Temperature (Celsius) | -40°C |
| Indoor/Outdoor | Both |
| Shelf Life | 18 months |
| Shelf Life in Months from Date of Manufacture | 12 months |
| Units per Case | 1 roll |
| Smallest Saleable Unit | Roll |
| Brand | 3M™ |
| Recommended Applications | Gasketing, Filters, Silicone foams and rubber |
| Industries | Aerospace, Appliance, Automotive, Converter Solutions, Electronics, General Industrial, Medical, Metalworking, Military & Government, Oil & Gas, Signage, Specialty Vehicles, Transportation |
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