LOCTITE® 566

Features and Benefits

A 1-part acrylic thread sealant for locking and sealing metal pipes and fittings.
LOCTITE® 566 is a brown, low-strength thread sealant for locking and sealing metal pipes and fittings against water, oil and most common organic materials. This medium-viscosity, dimethacrylate ester acrylic liquid cures when confined in the absence of air between close-fitting surfaces and prevents loosening and leakage from shock and vibration.
  • Medium viscosity
  • Low strength
  • Anaerobic-curing
  • Secondary cure (activator) available
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Technical Information

Color Brown
Key characteristics Mix: no mix required, Strength: low Strength, Viscosity: medium viscosity
Number of components 1 part
Physical form Liquid