Permabond Cyanoacrylate 919 Instant Adhesive-for Difficult Plastics & Rubbers

Product Name

Permabond Cyanoacrylate 919 Instant Adhesive-for Difficult Plastics & Rubbers

Brief Description

Permabond 919 is an original allyl cyanoacrylate instant adhesive, a single-part, low-viscosity liquid designed for rapid curing at room temperature. It is specifically formulated to provide excellent bond strength to difficult plastics and rubbers, as well as a wide variety of other materials including metals. A key feature is its high-temperature resistance, achieving up to 250°C (482°F) after a secondary heat-curing process.

Popular Applications & Uses

- Metal to metal bonding- Gaskets- Name plates- Wire tacking- Product assembly and manufacturing- General bonding and repair- Electronic applications requiring high temperature resistance- Automotive applications requiring high temperature resistance

Industries that Commonly Use It

- Aerospace/Defense (due to MIL-SPEC compliance and high-temperature resistance)- Automotive Service/Repair (for high-temperature automotive applications)- General Manufacturing (for high-speed production lines and diverse material bonding)- LED/Electronics (for electronic assembly and wire tacking)- Metal Fabrication (for bonding steel, aluminum, and other metals)- Plastic Fabrication (for bonding various plastics, including difficult types)

Special and Unique Features

- Original allyl cyanoacrylate adhesive- Designed for difficult plastics and rubbers- High-temperature resistance up to 250°C (482°F) with a secondary heat cure mechanism- Rapid development of high strength- Ease of use – single part, no mixing or heat cure required for initial bond- 100% reactive, no solvents- Approved to MIL-A-46050C Type V Class 1 (existing designs)

Key Properties

- **Type:** Allyl Cyanoacrylate Adhesive- **Viscosity:** Low viscosity, 2-6 mPa.s (cP)- **Color:** Clear- **Fixture/Handling Time:** <20 seconds on most surfaces (e.g., steel, NBR rubber, Buna N rubber, phenolic)- **Full Cure Time:** 24 hours- **Maximum Gap Fill:** 0.05 mm (0.002 inches)- **Temperature Range:** -55°C to 250°C (-65°F to 482°F) after post-curing- **Shear Strength (ISO 4587):** - Steel: 20-22 N/mm² (2900-3200 psi) - Aluminum: 16-18 N/mm² (2300-2600 psi) - ABS: 4 N/mm² (600 psi) - Polystyrene: 3.5 N/mm² (500 psi) - Polycarbonate: 7 N/mm² (1000 psi) - Phenolic: 14 N/mm² (2000 psi) - Gum Rubber: 2 N/mm² (290 psi)

Surface Compatibility

- Steel- Aluminum- Most metal surfaces- Most types of plastic- Most types of rubber- Ceramics- *Note: For difficult plastics like polypropylene, polyethylene, PTFE, or silicone, a primer (e.g., Permabond Polyolefin Primer - POP) is recommended.

Known backups / known substitutes

- Loctite® 4203- 3M™ Scotch-Weld™ PR600- Permatex® High-Temperature Super Glue- Loctite™ 404 Cyanoacrylate Instant Adhesive- Loctite™ 404 Prism Adhesive- Other Permabond high-temperature cyanoacrylates (e.g., Permabond 920, Permabond 922, Permabond 825)- Permabond toughened cyanoacrylates (e.g., Permabond 731, 735, 737) for improved impact resistance

Comparison Note

Permabond 919 stands out from standard cyanoacrylates due to its unique allyl formulation and secondary curing mechanism, which enables it to withstand significantly higher temperatures (up to 250°C/482°F) after a post-cure, making it suitable for demanding high-heat applications where typical instant adhesives would fail. It also offers excellent adhesion to a broader range of materials, including difficult-to-bond plastics and rubbers, alongside metals.