Loctite 243 Threadlocker Blue Liquid 250 ml Bottle 1100 psi

Medium-strength threadlocker for metal fasteners

Loctite 243 is a blue liquid threadlocker supplied in a 250 ml bottle. It creates a medium-strength bond that seals and secures metal nuts and bolts against loosening from shock and vibration. The formulation works on all metals, including passive substrates such as stainless steel, aluminum and plated surfaces. It is designed for general-purpose industrial and maintenance applications where removable locking is required.

Primerless application tolerates oily surfaces

The product is primerless, so it cures reliably on metal threads without a separate activator step. It remains tolerant of minor contamination from industrial oils such as motor oil, corrosion-prevention oil and cutting fluid. Shear strength is rated at 1100 psi, providing dependable holding power while still allowing disassembly with standard hand tools. The 0.7 kg container is sized for workshop or production-line use.

Single bottle ready for immediate use

The pack contains one 250 ml bottle of blue liquid threadlocker with no additional accessories or software. Because the formula is primerless and oil-tolerant, users can apply it directly to contaminated fasteners without extra cleaning agents or primers. This reduces preparation time and simplifies inventory by eliminating separate surface-conditioning products. The medium-strength bond allows future removal without heat or specialised equipment.