Thread Lock – Loctite 243 50ml


Out of stock

SKU: H4-02 Category:


Threadlocking Adhesive - medium strength. General purpose. Suitable for all metal threaded assemblies.

LOCTITE 243 is a general purpose threadlocker of medium bond strength. This threadlocker secures and seal bolts, nuts and studs to prevent loosening due to vibration. The product works on all metals, including passive substrates such as stainless steel, aluminium and plated surfaces. It is proven to be tolerant of minor contamination due to industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids.

Your benefits

  • Prevents loosening on vibrating assemblies, e.g. pumps, gear boxes or presses
  • Works on all metals, including passive substrates (e.g. stainless steel, aluminium, plated surfaces)
  • Proven to tolerate minor contamination by industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids
  • Permits disassembly with hand tools for servicing
  • P1 NSF Reg. No.: 123000


Apply sufficient adhesive to coat the treads. The adhesive will start to cure on exclusion of air from the bonding system. Observe handling and strength times stated below.

Bonding Time

Assuming room temperature is 20°C.

Handling: < 15 minutes

Full strength: 24 hours

Storage Conditions

Store in a closed upright container between 3 and 20°C in dry dark conditions.

At low temperatures the shelf life will be prolonged.

Shelf life - minimum shelf life 6 months @ 20°C.


Q: If anaerobics cure in the absence of air, how come they don't cure in the sealed bottle?

A: The anaerobic bottles are specially formulated oxygen-permeable polyethylene bottles that allow air to pass through the wall of the bottle to maintain stability of the liquid product inside the container. The bottle is also not filled to the top for stability purposes. A 50 ml bottle does indeed contain 50 ml's of product in a larger bottle.


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