Loctite 495 Super Bonder Instant Adhesive (SuperGlue)

Product Name: Loctite 495 Super Bonder Instant Adhesive (Super Glue)

Loctite 495 Super Bonder is a low-viscosity, general-purpose ethyl cyanoacrylate instant adhesive. It is the "jack-of-all-trades" in the Loctite instant adhesive line, designed to bond a wide variety of materials quickly and effectively. It is transparent, colorless, and flows easily to fill small gaps (up to 0.004"), making it suitable for bonding rubber, metal, and plastic parts in rapid assembly environments.

Popular Applications & Uses
- General purpose bonding of rubber, metal, and plastics.
- Rapid assembly of small parts in electronics and appliances.
- Fixturing parts quickly while other adhesives cure.
- Bonding O-rings (though Loctite 404 is the specialized choice for this).
- Quick repairs of broken plastic housings or trim.

Industries that Commonly Use It
- General Industrial Manufacturing
- Electronics Assembly
- Automotive (Interior trim, minor repairs)
- Consumer Appliance Repair
- Maintenance and Repair (MRO)

Special and Unique Features
- General Purpose: Bonds a wide range of similar and dissimilar materials.
- Fast Fixturing: Sets in 5-20 seconds, depending on the substrate.
- Low Viscosity: Thin liquid consistency (~40 cP) wicks into tight spaces.
- Clear Bond Line: Cures transparent for aesthetic repairs.
- Mil-Spec Compliant: Meets Commercial Item Description A-A-3097.

Key Properties
- Base: Ethyl Cyanoacrylate
- Color: Transparent / Colorless
- Viscosity: Low (~20 - 45 cP)
- Temperature Range: -40°F to 250°F (-40°C to 120°C) - *Note: Temperature resistance was upgraded in later formulations.*
- Specific Gravity: 1.1

Materials Bonded
- Rubber (Neoprene, Nitrile) - Fast set (<5 seconds)
- Plastics (ABS, PVC, Polycarbonate, Phenolic)
- Metals (Steel, Aluminum) - Slower set (10-30 seconds)

Cure Information
- Fixture Time: 5 - 20 seconds (material dependent).
- Full Cure: 24 hours.
- Cure Mechanism: Moisture cure (reacts with surface moisture).

Known backups / known substitutes for this product
- Loctite 401 (General Purpose, but slightly higher viscosity and better for porous surfaces).
- Loctite 406 (Wicking grade, optimized for difficult-to-bond plastics and rubbers).
- 3M Scotch-Weld CA4 (General Purpose).
- Permatex Super Glue (General consumer equivalent).

Comparison Note
- **Loctite 495 vs. 404:** Both are low viscosity instant adhesives. **404** is the industry standard specifically for **rubber O-rings** and has a sharper, more irritating odor. **495** is a **general purpose** adhesive that is slightly cheaper and bonds a wider mix of rigid materials (metals/plastics) with similar speed.
- **Loctite 495 vs. 401:** **495** is water-thin (40 cP). **401** is medium viscosity (100 cP) and is better for **porous surfaces** like wood, leather, or paper, which would just soak up the thinner 495.