Professional-grade double coated tape with acrylic and silicone adhesives for bonding silicone materials, foams, and gaskets in demanding industrial applications. Features exceptional temperature and chemical resistance with reliable performance from -40°F to 250°F.
3M™ Double Coated Tape 9731 is a high-performance adhesive tape specifically engineered for bonding silicone rubber elastomers, foams, and other specialized applications. This professional-grade tape features a unique dual-adhesive system with acrylic adhesive (3M™ Adhesive 350) on the face side and silicone adhesive on the liner side, making it ideal for demanding industrial applications including gasketing, filtration, and silicone component attachment. The tape is constructed with a 1 mil clear polyester (PET) carrier that provides excellent dimensional stability, handling ease, and compatibility with die-cutting and automated dispensing equipment.
The 9731 tape combines exceptional temperature and chemical resistance with versatile bonding capabilities across a wide range of substrates. With a maximum operating temperature of 250°F (121°C) and minimum operating temperature of -40°F (-40°C), this tape performs reliably in extreme environmental conditions. The silicone adhesive on the back side ensures superior bonding to silicone substrates and keypads, while the acrylic adhesive on the face side provides outstanding adhesion to HSE and LSE materials. The double-lined design features a 58# polycoated kraft paper (PCK) liner on the primary side and a 3 mil polyester film liner on the secondary side, both providing reliable protection and reducing edge curl.
This industrial-grade tape is ideal for pre-application to gasketing materials for die-cutting, instant adhesion in high-speed manufacturing processes, and replacement or bonding of gaskets in air and liquid filters, fluid handling equipment, and heat exchangers. The 5.5 mil overall thickness with 1.6 mil face side adhesive and 2.9 mil back side adhesive thickness delivers optimal holding power and performance. With an 18-month shelf life and 12-month warranty, 3M™ Double Coated Tape 9731 is engineered for professional industrial and occupational use, providing consistent, reliable performance across aerospace, automotive, electronics, medical device, and general industrial applications.
Key Features
- Dual adhesive system with acrylic (face side) and silicone (back side) for specialized bonding applications
- Exceptional temperature and chemical resistance with operating range from -40°F to 250°F (-40°C to 121°C)
- Superior bonding to silicone elastomers, foams, and various rubber substrates with instant adhesion
- Clear 1 mil polyester film carrier provides dimensional stability and compatibility with die-cutting and automated dispensers
- Double-lined design with 58# polycoated kraft paper and 3 mil polyester film liners reduces edge curl and protects from humidity
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Double Coated Tape 9731 |
| Part Number | 9731 |
| UPC Code | 00051138955915 |
| Overall Width (Imperial) | 9 inches |
| Overall Width (Metric) | 228.6 mm |
| Overall Length (Imperial) | 108 yards |
| Overall Length (Metric) | 98.75 meters |
| Overall Thickness (Imperial) | 5.5 mil |
| Overall Thickness (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 Adhesive |
| 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 (PET) |
| Secondary Liner Thickness (Imperial) | 2.9 mil |
| Secondary Liner Thickness (Metric) | 0.07 mm |
| Secondary Liner Color | Transparent |
| Product Color | Transparent/Clear |
| Core Size (Imperial) | 3 inches |
| Core Size (Metric) | 76.2 mm |
| Maximum Operating Temperature (Fahrenheit) | 250°F |
| Maximum Operating Temperature (Celsius) | 121°C |
| Minimum Operating Temperature (Fahrenheit) | -40°F |
| Minimum Operating Temperature (Celsius) | -40°C |
| Product Form | Roll |
| Units per Case | 1 Roll |
| Smallest Saleable Unit | Roll |
| Tape Type | Double Coated |
| Assembly Type | Gasket Attachment |
| Indoor/Outdoor | Both |
| Shelf Life | 18 Months |
| Shelf Life from Date of Manufacture | 12 Months |
| Brand | 3M™ |
| Adhesive Type | Acrylic/Silicone |
| Recommended Applications | Gasketing, Filters, Silicone foams and rubber bonding |
| Industries Served | Aerospace, Appliance, Automotive, Electronics, General Industrial, Medical, Metalworking, Military & Government, Oil & Gas, Signage, Specialty Vehicles, Transportation |
| Master Size Length (Metric) | 98.8 meters |
| Master Size Width (Metric) | 122 centimeters |
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