Threadlockers

Threadlockers – reliable protection against loosening and corrosion

At M&M Intercom, we offer a wide selection of professional threadlockers designed for permanent or temporary fastening of threaded joints, effectively preventing loosening caused by vibration, thermal stress, or mechanical impact. Our threadlockers provide stability, long-term sealing, and corrosion protection, making them indispensable in industry, mechanical engineering, service, and maintenance.
We offer threadlockers from leading brands Henkel (Loctite) and Weicon, recognized worldwide in the field of adhesives and technical sealants. You can choose from numerous variants, from low to very high strength, depending on the required holding power and intended application.

Features and advantages of threadlockers

Our threadlockers are based on advanced anaerobic curing technology, allowing the adhesive to remain liquid until confined in the thread, where, in the absence of air and in contact with metal, it polymerizes to form a strong bond. This process ensures complete sealing and prevents self-loosening of fasteners.

Key advantages:

• Effective prevention of loosening caused by vibration and load
• Heat resistance up to 200 °C
• Protection against corrosion, moisture, and oils
• Easy to apply – no additional mechanical locking devices needed
• Possibility of disassembly (for certain types)
• High chemical resistance to fuels, lubricants, and solvents

Threadlockers are suitable for all metal threads—from aluminum to stainless steel—and are used in the automotive industry, hydraulics, pneumatics, construction machinery, and many other fields.

Types and applications by strength

Threadlockers are available in various strength levels, easily identified by color:

• Blue threadlockers – medium strength, allow easy disassembly with standard tools; suitable for general use.
• Red threadlockers – high strength, designed for permanent joints where disassembly is not intended.
• Green threadlockers – very high strength, ideal for locking small screws and bearings.
• Purple threadlockers – low strength, suitable for delicate parts, electronic devices, and small screws.

Strength and purpose are clearly marked on the packaging, available in sizes from 5 ml to 250 ml, making them suitable for both individual and professional use.

Temperature range and technical properties

Threadlockers maintain stability across a wide temperature range from –60 °C to +200 °C. The chemical composition ensures uniform curing across the entire thread surface, providing optimal mechanical strength and vibration resistance.
As 1K single-component adhesives, they are extremely easy to use. The surface only needs to be cleaned and degreased before applying the correct amount of adhesive and allowing it to cure. Compared to mechanical solutions (such as washers or pins), they provide greater precision and long-lasting performance.

Practical applications

Our threadlockers are used in a wide range of industrial and service environments, including:

• Automotive industry (engines, gearboxes, braking systems)
• Mechanical engineering and maintenance
• Hydraulic and pneumatic systems
• Assembly of metal structures and electronic equipment
• Bicycle, motorcycle, and tractor servicing
• Energy and transport technology

Each threadlocker in our range ensures precise sealing and wear protection, regardless of vibration frequency or load changes.

Manufacturers, quality, and stock

We offer only original Henkel (Loctite) and Weicon threadlockers, known for reliability, chemical stability, and verified technical specifications.
All products are certified and designed according to industrial standards. Most items are in stock for fast delivery and bulk orders.
Our technical advisors assist you in selecting the right type based on screw size, required strength, temperature range, and operating conditions.

Frequently Asked Questions about Threadlockers

1. What are threadlockers and why are they used?
Threadlockers are special anaerobic adhesives that prevent loosening of threaded joints due to vibration, temperature changes, or load. They create a strong, durable bond while protecting against corrosion and air exposure.
2. How do threadlockers work?
They cure through an anaerobic reaction—hardening occurs when the adhesive is confined between metal surfaces and oxygen is excluded, forming a strong chemical bond between the screw and nut.
3. Can a screw be removed after applying threadlocker?
Yes, depending on the type. Low- and medium-strength types can be removed with hand tools; high-strength ones require heating (approx. 200 °C) or a special solvent.
4. What do the different colors mean?

• Purple – low strength (small screws, delicate parts)
• Blue – medium strength (general use, removable)
• Red – high strength (permanent joints)
• Green – very high strength (bearings, fixed assemblies)

5. How is threadlocker applied correctly?
Clean and degrease the thread, apply a small amount directly to the screw or nut, then tighten the joint. The adhesive starts curing within minutes and reaches full strength in 12–24 hours.
6. What temperature range can threadlockers withstand?
Most professional threadlockers withstand from –60 °C to +200 °C without losing strength or sealing properties.
7. Are threadlockers suitable for all metals?
Yes, they are compatible with steel, stainless steel, aluminum, and copper. For passive metals (e.g., aluminum), an activator is recommended for faster curing.
8. How to choose the right strength?
For parts that need to be disassembled (service, assembly), use blue threadlockers. For permanent joints or high-vibration parts, choose red or green. For delicate components, use purple.
9. Which manufacturers are the most reliable?
The most trusted brands are Henkel (Loctite) and Weicon, offering certified quality and compliance with industrial standards.
10. How should threadlockers be stored?
Store them in a cool, dry place, away from direct light. Always close the container tightly, as air exposure can reduce shelf life.

Email: [email protected]
Tel: +386 1 29 27 960