Loctite 569 belongs to the anaerobic thread sealant group, specialized for small hydraulic and pneumatic pipe thread joints. This type is less known than 542, 545, 565, 567 but is designed by Henkel for very specific applications.
🔹 Information about Loctite 569:
Form: Liquid glue, yellow-brown color.
Features:
Specialized for small hydraulic & pneumatic threads.
Creates a flexible, durable seal, preventing gas, oil, water, fuel leaks.
Withstands temperatures from -55°C to +150°C.
Withstands high pressure (industrial hydraulic & pneumatic).
Medium viscosity → flows evenly on small threads.
Initial drying time: ~20 minutes on steel, longer on stainless steel/aluminum.
Easy to remove when maintenance is needed (not brittle like flange glue).
🔹 Practical applications:
Seal threads in hydraulic and high-pressure pneumatic systems.
Valves, small thread fittings, connecting pipes in industrial machinery.
Oil, gas, water systems.
Ideal for tapered threads, small-sized pipe threads that require absolute sealing.
👉 Summary:
Loctite 542: general-purpose, small-medium threads.
Loctite 545: precision hydraulic and pneumatic threads, small sizes.
Loctite 565: large threaded pipes, replace tape.
Loctite 567: stainless steel threads, high heat and chemical resistance.
Loctite 569: specialized for small-sized hydraulic and pneumatic threads, high pressure.
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