Loctite 243 is a medium-strength, blue-colored retaining compound with exceptional oil tolerance, allowing it to cure even on slightly contaminated surfaces. This versatile threadlocker is designed for locking and sealing threaded fasteners up to 1 inch diameter, providing reliable performance in industrial assembly and maintenance applications where surface preparation is challenging.
The oil-tolerant formula eliminates the need for extensive cleaning before application, saving time and reducing the risk of assembly errors. This retaining compound cures in the absence of air between close-fitting metal surfaces, creating a strong bond that prevents loosening from vibration and shock. The medium strength allows disassembly with standard hand tools when required.
Loctite 243 provides resistance to oil, moisture, and common industrial chemicals, ensuring reliable performance in demanding environments. Suitable for all metals, including passive substrates such as stainless steel and plated surfaces, this retaining compound is the trusted choice for maintenance professionals worldwide.
Specifications
- Brand: Loctite
- Model: 243
- Size: 50ml
- Strength: Medium




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