LOCTITE® 518 is a general-purpose, primerless, semi-flexible, form-in-place anaerobic flange sealant. It cures – even in the presence of minor surface contaminants – to seal close- fitting joints between rigid metal flanges, and will flex with minor flange movements. It provides resistance to low pressures immediately after assembly of flanges, and is ideal for use on aluminium substrates where you need very good flexibility. Typically used as a form-in-place gasket for pumps, thermostats, compressors, transmission housings and axle covers, it not only works on active metals (e.g. mild steel) but also on passive substrates, such as aluminium with a low copper content. You can expect gap-filling performance to 0.25 mm (0.01″).
Gasket sealants
Acrylates, anaerobic cure
Dispense system; Manual
Rigid assembly gasketing; Sealing
Dimethacrylate ester
Red
Anaerobic cure
25.0 min.
0.25 mm
Fluorescent; For machined, rigid flanges; Immediate low pressure sealing; Strength: medium strength; Surface contamination-tolerant; Thixotropic
1 part
-55.0 °C - 150.0 °C (-65.0 °F - 300.0 °F)
Gel
Metal: aluminium; Metal: iron - cast iron; Metal: passive metal; Metal: steel
1.1
8.0 °C - 21.0 °C
750000.0 mPa·s (cP)
60 m3/h
38 m
33 °C