LOCTITE® 577

Features and Benefits

Medium-strength, general purpose thread sealant for straight/straight and straight/taper threads and fittings. Fills the space between threaded parts and seals and locks at the same time.
LOCTITE® 577 is designed for the locking and sealing of metal pipes and fittings as well as other threaded assemblies. The product provides an instant, low-pressure seal for metal pipes and fittings. It will not creep, shrink or shred. It has excellent chemical and thermal resistance and offers less migration of liquid product after application.
  • Excellent chemical resistance
  • Easy to apply
  • Medium-strength, general purpose thread sealant for sealing metal threads
  • Instant low pressure seal
  • Cures on active and inactive metals
  • NSF P1 Reg. No. 123001
  • Suitable for all metals
  • DVGW Approval (EN 751-1): DVGW Reg. No. NG-5146CQ0312
  • Locks connection against vibration-induced loosening and other stresses
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Technical Information

Agency approvals / certificates / specifications DVGW, NSF, WRAS
Application method Dispense system, Manual
Applications Pipe sealing, Thread sealing
Breakaway torque, Steel M10 33.0 N·m (295.0 in./lb. )
Colour Yellow
Cure type Anaerobic cure
Key characteristics Chemical resistant, Fluorescent, General purpose, Immediate low pressure sealing, Strength: medium strength, Surface contamination-tolerant, Temperature: high temperature, Thixotropic
Operating temperature -55.0 - 150.0 °C (-65.0 - 300.0 °F )
Physical form Paste
Recommended for use with Metal, Metal: passive metal, Thread type: tapered
Viscosity, 20 RPM 25000.0 mPa·s