Loctite 518 is also an anaerobic flange sealant, in the same “family” as Loctite 510 and 515, but has its own characteristics suitable for easily deformed surfaces.
Information about Loctite 518:
Form: Slightly thick gel glue, bright red color.
Main application: Sealing easily deformed metal flanges, especially aluminum.
Outstanding features:
Heat resistant from –55°C to +150°C.
Prevents leakage of oil, water, coolant, compressed air.
Fills gaps up to 0.25 mm.
Creates elastic, non-shrinking seals.
Can be used for assembled flanges that are not completely flat or soft aluminum surfaces.
Fixture time: ~25 minutes on steel, longer on aluminum/stainless steel.
Practical applications:
Seal gearboxes, pumps, motors with aluminum or soft metal flanges.
Replace traditional paper/rubber gaskets.
Suitable for assemblies that need to be disassembled for maintenance because it is easier to clean than 510 glue.
👉 Summary:
510: when high heat resistance and hard surfaces are required.
515: for hard/semi-hard metal flanges, moderate temperatures.
518: optimal for aluminum or soft, easily deformable, easy to disassemble.
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