Product Name
Permabond 108 Instant Adhesive-Fast-Set-Gap Filling, Great for Plastic & Rubber
Brief Description
Permabond 108 is a fast-setting, intermediate-viscosity cyanoacrylate adhesive engineered for bonding plastics, rubber, and metals, while also accommodating small gaps. This single-component adhesive cures rapidly at room temperature upon contact with surface moisture, making it ideal for industrial manufacturing and precision bonding applications.
Popular Applications & Uses
- Bonding plastics, rubber, and metals in industrial settings.
- Gap-filling applications for uneven surfaces or molded parts.
- Wire tacking on PC boards and electronics assembly.
- Bonding ceramics.
- Assembly of automotive parts.
- Manufacturing of medical equipment.
- Bonding packaging materials.
- General assembly processes requiring fast, strong bonds.
Industries that Commonly Use It
- Aerospace/Defense
- Automotive Service/Repair
- Construction/Building Services
- Electrical Services or Products
- General Manufacturing
- LED/Electronics
- Medical Device/Prosthetics
- Metal Fabrication
- Military
- Packaging Services or Contractor
- Plastic Fabrication
Special and Unique Features
- Fast-Setting Formula: Achieves handling strength in approximately 10 seconds on various substrates.
- Intermediate Viscosity: Offers controlled application and is ideal for automated dispensing systems.
- Gap-Filling Capability: Can fill gaps up to 0.25 mm (0.008 in).
- MIL-SPEC Compliant: Meets MIL-A-46050C Type II, Class 3 and CID A-A-3097 Type II, Class 3, suitable for military and aerospace applications.
- High Strength & Impact Resistance: Provides durable and structural bonds.
- Single-Part, No Mixing Required: Easy-to-use for fast production lines.
- 100% Solids, Solvent-Free: An eco-friendly option with no VOCs.
- Water, Heat, and UV Resistant: Ensures durability in challenging conditions.
Key Properties
- Chemical Composition: Ethyl cyanoacrylate
- Appearance: Colourless/Clear liquid
- Viscosity @ 25°C: 400-600 mPa.s (cP)
- Specific Gravity: 1.1
- Maximum Gap Fill: 0.25 mm (0.008 in)
- Fixture/Handling Time: 10 seconds (Steel, Buna-N Rubber, Phenolic)
- Full Cure Time: 24 hours
- Shear Strength (ISO 4587): Steel: 20-22 N/mm² (2900-3200 psi); ABS: 8 N/mm² (1160 psi); PVC: >10 N/mm² (>1450 psi); Polycarbonate: 10 N/mm² (1450 psi)
- Impact Strength (ASTM D-950): 3-5 kJ/m² (1.4-2.4 ft-lb/in²)
- Temperature Range: -55°C to 82°C (-65°F to 180°F), with short exposures up to 150°C (300°F)
- VOC Content: <2%, 20 g/L
Surface Compatibility
Permabond 108 is highly compatible with a wide range of materials, including:
- Plastics: ABS, PVC, Polycarbonate, Phenolic, and many other common plastics.
- Rubber: Including Buna-N rubber.
- Metals: Steel, Aluminium, Copper, Brass, Cast Iron, Zinc.
- Other: Ceramics, Composites, Wood, Leather.
For optimal bonding, surfaces should be clean, dry, and free of grease. Light abrasion may be beneficial for some metals to remove oxide layers.
Known backups / known substitutes
Customers seeking alternatives to Permabond 108 may consider:
- Loctite® 415
- 3M™ Scotch-Weld™ PR600
- Permatex® General Purpose Super Glue
- Loctite® 416™ Super Bonder® Instant Adhesive
- Other Permabond cyanoacrylate grades (e.g., Permabond 101, 102, 105, 170, 240, 268, 795) depending on specific application requirements like viscosity, gap fill, or surface insensitivity.
Comparison Note
Permabond 108 distinguishes itself as an intermediate viscosity cyanoacrylate adhesive, striking a balance between precise flow control and effective gap-filling capabilities up to 0.25mm. Its rapid setting time and MIL-SPEC compliance make it particularly well-suited for high-speed industrial production environments where strong, durable bonds are required across a diverse range of materials, especially plastics and rubber. It offers a reliable and high-performance alternative to other general-purpose and precision instant adhesives on the market.
