Top Pick Loctite 243 Primerless Threadlocker is an oil tolerant, removable, medium strength, blue threadlocker designed for the locking and sealing of threaded fasteners between 1/4" and 3/4" (6 to 20 mm). It not only works on active metals (e.g. brass, copper) but also on passive substrates such as stainless steel and plated surfaces. It tolerates minor surface contaminations from various oils, such as cutting, lubrication, anti-corrosion and protection fluids. Loctite 243 is the recommended replacement for Loctite 2440 .
Top Pick Loctite 243 Primerless Threadlocker is an oil tolerant, removable, medium strength, blue threadlocker designed for the locking and sealing of threaded fasteners between 1/4" and 3/4" (6 to 20 mm). It not only works on active metals (e.g. brass, copper) but also on passive substrates such as stainless steel and plated surfaces. It tolerates minor surface contaminations from various oils, such as cutting, lubrication, anti-corrosion and protection fluids. Loctite 243 is the recommended replacement for Loctite 2440 .
in 3 offers
last seen 7 May 2026
The lowest price we last saw for Loctite 243 Medium Strength Blue Adhesive Threadlocker 250ml (1311323) was $65.81 at InchTools.com, compared across 3 retailers (last seen 7 May 2026). Prices may have changed since.
The all-time low we recorded was $65.56 on 3 May 2026.
Prices last updated 7 May 2026.
Loctite 243 Medium Strength Blue Adhesive Threadlocker 250ml (1311323)
Top Pick Loctite 243 Primerless Threadlocker is an oil tolerant, removable, medium strength, blue threadlocker designed for the locking and sealing of threaded fasteners between 1/4" and 3/4" (6 to 20 mm). It not only works on active metals (e.g. brass, copper) but also on passive substrates such as stainless steel and plated surfaces. It tolerates minor surface contaminations from various oils, such as cutting, lubrication, anti-corrosion and protection fluids. Loctite 243 is the recommended replacement for Loctite 2440 .
Top Pick Loctite 243 Primerless Threadlocker is an oil tolerant, removable, medium strength, blue threadlocker designed for the locking and sealing of threaded fasteners between 1/4" and 3/4" (6 to 20 mm). It not only works on active metals (e.g. brass, copper) but also on passive substrates such as stainless steel and plated surfaces. It tolerates minor surface contaminations from various oils, such as cutting, lubrication, anti-corrosion and protection fluids. Loctite 243 is the recommended replacement for Loctite 2440 .
Last updated at 07/05/2026 23:12:16
Loctite 243 Threadlocker Medium Strength, Oil Resistant, 250ml
Delivery between 16–19 May $26.44
LOCTITE 243 Blue, medium strength, primerless threadlocker 250ml
Loctite 442-1329505 Thread Lockers
Delivery $27.75
Loctite 243 Threadlocker Medium Strength, Oil Resistant, 250ml
Delivery between 16–19 May $26.44
LOCTITE 243 Blue, medium strength, primerless threadlocker 250ml
Loctite 442-1329505 Thread Lockers
Delivery $27.75
