Loctite 577 Threadsealant Medium Strength High Pressure 50ml

LOCTITE® 577 is a 1-part, medium-strength, thixotropic thread sealant for straight-to-straight and straight-to-taper threaded metal fittings. It fills the space between threads, providing sealing and locking at the same time. This general-purpose thread sealant is effective on both active and inactive metals, resistant to minor surface contamination, and offers chemical resistance and high temperature performance. Perfect for stainless steel without surface activation and for use in hydraulic and industrial applications.

Key Features:

  • Excellent Chemical Resistance: Maintains integrity in challenging chemical environments.
  • Thixotropic Formula: Easy to apply and prevents run-off on vertical surfaces.
  • Medium Strength: Provides a secure seal while allowing disassembly if required.
  • Cures on Active and Inactive Metals: No primer required for stainless steel or passive metals.
  • Instant Low-Pressure Seal: Won’t creep, shrink, or shred during assembly.
  • Certified: NSF Category P1, DVGW EN 751-1, KIWA GASTEC QA AR 214 for hydrogen gas systems.

Technical Specifications:

Specification Details
Agency Approvals / Certificates DVGW, NSF, WRAS
Application Method Dispense system, Manual
Applications Pipe sealing, Thread sealing
Breakaway Torque (Steel M10) 33.0 N·m (295 in./lb.)
Colour Yellow
Cure Type Anaerobic cure
Key Characteristics Chemical resistant, Fluorescent, General purpose, Immediate low pressure sealing, Medium strength, Surface contamination-tolerant, High temperature, Thixotropic
Operating Temperature -55°C to 150°C

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