Can LOCTITE 243 thread locking withstand engine oil contamination and still achieve full strength within 24 hours?

Yes . LOCTITE 243 thread locking is formulated to tolerate light contamination from industrial oils, including engine oils, and can still cure and reach full strength. It develops initial handling strength in about 15â30 minutes (material dependent) and achieves full strength within 3â24 hours depending on the substrates and level of contamination. Heavy oil contamination will slow or prevent cure, but typical light engine-oil residues are within its designed tolerance. For best and fastest results, remove as much oil as practical (wipe or degrease) before application; if only light contamination is present, expect full strength within the stated 3â24 hour window.

Is LOCTITE 243 thread locking safe for use on stainless steel fasteners in high-vibration applications?

Yes - LOCTITE 243 thread locking is suitable for stainless steel fasteners in high-vibration applications. It is a medium-strength, removable anaerobic adhesive formulated for all metal threaded connections, including passive substrates like stainless steel. It prevents loosening under vibration, tolerates light oil contamination, and works on thread sizes up to M36. Operating range â55Â°C to +180Â°C; initial strength 15â30 minutes, full strength 3â24 hours; breakaway torque ~26 Nm. Ensure surfaces are clean for best performance and allow full cure before load.

Can LOCTITE 243 thread locking be used on plated metal surfaces exposed to coolant or corrosion inhibitors?

Yes. LOCTITE 243 thread locking can be used on plated metal surfaces that are exposed to coolants or corrosion inhibitors. It is formulated for all metal threaded connections, including passive substrates like plated surfaces, and tolerates light contamination from industrial oils, corrosion inhibitors, and coolants. For best results, ensure threads are free of heavy dirt or heavy oil films; allow recommended cure times (initial strength 15â30 min, full strength 3â24 h) and stay within the productâs temperature limits (â55Â°C to +180Â°C).

LOCTITE 243 thread locking

Adhesives and screw protections, All products/

Additional information

LOCTITE 243 is a medium-strength removable anaerobic adhesive suitable for all metal threaded connections. It prevents loosening of parts subjected to vibrations, such as bolts, nuts, or pins. It works on all metals, including passive substrates (e.g., stainless steel, aluminum, and plated surfaces). It features tolerance to light contamination from industrial oils, such as engine oils, corrosion inhibitors, and coolants. Color: blue. Maximum thread diameter: up to M36. Operating temperature range: from -55°C to +180°C. Breakaway torque for bolts: 26 Nm. Time to achieve initial strength: 15-30 min (depending on the material). Time to achieve full strength: 3-24 h (depending on the material). Certifications: P1 NSF Certificate No: 123000. Packaging – container of 10 ml or 50 ml.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Price	Quantity	Actions	Catalogue
LT-243-10	LOCTITE 243 Thread Sealant (10 ml)	-	-	In stock	0 zł		Enquiry
LT-243-50	LOCTITE 243 Thread Sealant (50 ml)	-	-	In stock	0 zł		Enquiry

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LOCTITE 243 is a medium-strength removable anaerobic adhesive suitable for all metal threaded connections. It prevents loosening of parts subjected to vibrations, such as bolts, nuts, or pins. It works on all metals, including passive substrates (e.g., stainless steel, aluminum, and plated surfaces). It features tolerance to light contamination from industrial oils, such as engine oils, corrosion inhibitors, and coolants. Color: blue. Maximum thread diameter: up to M36. Operating temperature range: from -55°C to +180°C. Breakaway torque for bolts: 26 Nm. Time to achieve initial strength: 15-30 min (depending on the material). Time to achieve full strength: 3-24 h (depending on the material). Certifications: P1 NSF Certificate No: 123000. Packaging – container of 10 ml or 50 ml.