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LOCTITE 243 - Threadlocker - 250ml

Medium Strength Threadlocking Adhesive

₹2275.00

LOCTITE 243 – Medium-Strength Threadlocker

LOCTITE 243 is a blue, medium-strength anaerobic threadlocker designed to secure threaded fasteners and prevent loosening caused by vibration, shock and thermal cycling. It is a versatile general-purpose threadlocking adhesive for industrial assembly, maintenance and repair applications.

LOCTITE 243 is particularly useful where reliable locking is required but the fastener may need to be removed later using standard hand tools. It is also designed to provide good performance on surfaces that may have small amounts of residual oil, making it well suited to many maintenance environments.

Key Features

  • Medium-strength threadlocker

  • Blue color for easy identification

  • Helps prevent loosening caused by vibration

  • Suitable for nuts, bolts, screws and threaded fasteners

  • Designed for general industrial maintenance and assembly

  • Can be removed with conventional hand tools

  • Helps seal threads against leakage and corrosion

  • Suitable for a wide range of metal substrates

  • Useful for applications where fasteners require future servicing

Typical Applications

LOCTITE 243 is commonly used for securing threaded components in:

  • Industrial machinery

  • Motors and pumps

  • Gearboxes

  • Automotive equipment

  • Compressors

  • Mechanical assemblies

  • Flanges and threaded connections

  • Maintenance and repair applications

  • General-purpose bolted assemblies

It is especially suitable for applications where vibration could cause conventional threaded fasteners to loosen.

How LOCTITE 243 Works

LOCTITE 243 is an anaerobic adhesive. When applied to the threads and confined between closely fitting metal surfaces, it cures in the absence of air.

After curing, it fills the microscopic gaps between the mating threads and creates a strong bond. This helps prevent the fastener from rotating or loosening under vibration and shock.

Application Procedure

  1. Clean the threads and remove dirt, grease and other contaminants where practical.

  2. Apply LOCTITE 243 evenly to the threaded area.

  3. Assemble the nut, bolt or screw and tighten to the specified torque.

  4. Allow the product to cure before exposing the assembly to full operating conditions.

  5. Remove excess product from exposed surfaces if necessary.

For inactive metals or difficult-to-cure applications, a suitable LOCTITE activator may be used according to the application requirements.

LOCTITE 243 vs LOCTITE 242

Both products are blue, medium-strength threadlockers, but LOCTITE 243 is generally preferred for maintenance applications where some residual oil contamination may be present. LOCTITE 243 is therefore a popular choice for industrial service and repair work.

Why Choose LOCTITE 243?

LOCTITE 243 is an excellent choice when you need a reliable medium-strength threadlocker for industrial fasteners, particularly where vibration resistance and future serviceability are important. Its versatility makes it suitable for a broad range of machinery, automotive and maintenance applications.