Essential Knowledge of Loctite Thread-Locking Adhesive for Screw

Loctite thread-locking adhesive, also known as screw adhesive or anaerobic adhesive, is widely used in electronics, aerospace, automotive, and other industries. These adhesives can be applied to screws to prevent loosening and provide rust protection. Here's a detailed overview:

1. Physical Properties

Anti-Loosening: Prevents loosening of screws, bolts, and nuts.

Rust Prevention: Protects screws from corrosion and rust.

Vibration Resistance: Easy to use without special tools or skills.

Versatility: Suitable for all screw shapes, unaffected by design changes.

Loss Reduction: Prevents machine and component failures due to loosening, improving reliability.

Penetration: Excellent penetration to the bottom of screws, ensuring full anti-loosening.

Ease of Removal: Can be loosened with appropriate force.

Non-corrosive: Safe for use on plastics and painted surfaces.

2. Application Method

Cleaning: Remove moisture, grease, and dirt from the screw base.

Application: Apply with a brush; it can be applied to already locked screws.

Curing: Avoid touching before it sets (approximately two hours).

Removal: Use 15%-30% more force than when locking to remove.

3. Removal Methods

Small Screws (M2-M12): Use low-strength adhesive; apply force to break the bond.

Medium Screws (M12-M20): Use medium or high-strength adhesive; medium strength can be removed by force, and high strength may require heating.

Large Screws (M20 and above): Use high-strength adhesive; heat the screw with a hot air gun while applying force to remove it.

4. Precautions

Storage: Prevent evaporation and avoid extreme temperatures.

Flammability: Store safely and avoid moisture.

5. Applications

Widespread Use: Aircraft, ships, cars, electronics, and various industrial screws.

Home Appliances: TVs, washing machines, recorders, motorcycles, cameras, and audio equipment.

6. Professional Applications

Locking and Anti-Loosening: Chemical locking is cost-effective and efficient; pre-applied anaerobic adhesive can be stored long.

Sealing and Leak Prevention: Replaces solid gaskets, ensuring tight contact and extending seal life.

Retaining and Positioning: Cylindrical components (bearings, pulleys, gears, etc.) use adhesive to fill gaps, ensuring durable and reliable bonds.

Filling and Leak Prevention: Low-viscosity anaerobic adhesive can repair micro-pores; vacuum impregnation enhances success rates.

By understanding and utilizing these properties and methods, you can ensure the reliability and longevity of screw connections in various industrial applications.

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