Loctite 243 Threadlocker – Medium Strength, Oil Tolerant

Loctite 243 is a one-component, blue, thixotropic threadlocking adhesive for metal fasteners that must resist shock and vibration yet stay serviceable. It cures without air between close-fitting metal surfaces and tolerates minor surface contamination from cutting, lubricating and anti-corrosion oils.

Key features

  • Medium strength: release fasteners with standard hand tools
  • Oil tolerant: cures through minor contamination from cutting and lubricating oils
  • Works on brass, copper, stainless steel and plated surfaces as well as steel
  • Thixotropic: the liquid stays where it is applied
  • Stops loosening and leakage caused by shock and vibration

Typical applications

  • Pumps and gearboxes
  • Motors and vehicles
  • Machinery fasteners that need regular maintenance

Specification

Specification Details
Brand Loctite (Henkel)
Product code 243
Type Anaerobic threadlocker, one component
Strength Medium
Colour Blue
Viscosity Medium, thixotropic
Removal Standard hand tools; localised heat to about 250 °C if needed
Not recommended for Thermoplastic parts (risk of stress cracking); pure-oxygen or oxygen-rich systems

Ordering: Tell us the pack size and quantity you need and we will send a quotation.