LOCTITE® 243™ Blue Threadlocker – Medium Strength Oil-Resistant Anaerobic Adhesive for Automotive & Machinery Fasteners (50ml Bottle)

Description:

LOCTITE® 243™ is a premium medium-strength, blue threadlocker engineered for the reliable locking and sealing of threaded fasteners. Designed to perform under vibration, shock, and temperature variations, it cures anaerobically—when confined between metal surfaces in the absence of air. This threadlocker provides a secure hold while still allowing standard disassembly with hand tools, making it ideal for maintenance and service applications across automotive, machinery, and heavy-duty equipment sectors.

Formulated with oil-tolerant chemistry, LOCTITE® 243™ bonds effectively even on slightly oily surfaces and is compatible with both active (brass, copper) and passive (stainless steel) metals. Its thixotropic nature prevents migration after application, ensuring precision placement. With strong resistance to water, oils, brake fluids, and industrial chemicals, it delivers consistent sealing performance for bolts, nuts, pumps, gearboxes, and motors. The 50ml size is perfect for workshop or professional use, offering high reliability in a compact, easy-to-use format.

• Medium Strength Hold: Secures fasteners while still allowing standard disassembly

• Anaerobic Cure System: Cures in the absence of air between metal surfaces

• Oil-Tolerant Formula: Performs well even on slightly contaminated surfaces

• Vibration & Shock Resistant: Maintains fastener stability under dynamic conditions

• Multi-Metal Compatibility: Works on both active and passive metals

• Fluid & Chemical Resistance: Protects threads from brake fluids, water, and oils