Permabond 731 Flexible Toughened Cyanoacrylate Adhesive, 1 Pound Bottle (CA007310016Z0101)
Permabond 731 — Flexible Toughened Cyanoacrylate Adhesive, 1 Pound Bottle
Permabond 731 is a toughened, flexible cyanoacrylate (CA) instant adhesive engineered for applications demanding more than standard CAs can deliver. Where rigid cyanoacrylates crack under stress, 731's flexible formulation absorbs impact and peel forces — making it the go-to choice for bonding rubber, elastomers, and flexible plastics that flex or vibrate in service. Its longer open time also gives assemblers more working accuracy on challenging joints.
Key Specifications
- Part Number: 731 (CA007310016Z0101)
- Type: Toughened flexible cyanoacrylate adhesive
- Viscosity: Medium
- Size: 1 pound bottle
- Cure: Moisture-activated
- Key Properties: Flexible, impact resistant, high peel strength
- Substrates: Plastics, elastomers, rubber, steel, aluminum
- Open Time: Longer than standard CA for improved placement accuracy
Applications
- Bonding rubber and elastomeric components subject to flex or vibration
- Plastic assemblies requiring impact and peel resistance
- Metal-to-rubber and metal-to-plastic bonds in industrial applications
- Electronics and electromechanical assemblies with dynamic load requirements
- Gasket bonding, flexible substrate assembly, and MRO repair
Frequently Asked Questions
What makes Permabond 731 different from standard cyanoacrylates?
Permabond 731 is a toughened formulation that provides significantly higher impact and peel resistance than standard rigid CAs. Standard cyanoacrylates are brittle under dynamic or shock loading — 731's flexible chemistry allows the bondline to flex rather than crack, making it far more durable in demanding applications.
What substrates does Permabond 731 bond best to?
It bonds well to plastics, rubber, elastomers, steel, and aluminum. It is particularly effective for rubber-to-metal and rubber-to-plastic bonds where other adhesives fail due to flexibility mismatch.
How does the longer cure time of 731 compare to other Permabond CAs?
731 has a longer fixture time than thin standard CAs, which allows assemblers more time to position parts accurately before the bond sets. Full cure develops over 24 hours under normal conditions.
Is Permabond 731 suitable for outdoor or high-temperature applications?
Permabond 731 offers good environmental resistance but is not specifically formulated for extreme high-temperature applications. For high-heat environments, consider a Permabond engineering adhesive rated for elevated temperatures. Refer to the TDS for specific temperature resistance data.
How should Permabond 731 be stored to maximize shelf life?
Store in a cool, dry location away from moisture and heat. Refrigeration at 35–50°F extends shelf life. Always recap tightly after use to prevent moisture-initiated cure inside the bottle.
