LOCTITE® 577
Features and Benefits
Medium strength, thixotropic, general purpose thread sealant for straight-to-straight and straight-to-taper threaded fittings. Fills the space between threaded parts and seals and locks at the same time.
When you need a general-purpose thread sealant with high temperature- and contamination-tolerance, as well as effectiveness on inactive and active metals, choose LOCTITE® 577. Designed for the locking and sealing of threaded metal pipes and fittings, this product provides an instant, low-pressure seal and won't creep, shrink or shred. Perfect for use on stainless steel without the need for surface activation, it offers gap performance to 0.25 mm (0.01") and will cure even in the presence of minor surface contaminations from cutting, lubrication, anti-corrosion and protection fluids, or cleaners containing surfactants and corrosion inhibitors. Meets the performance requirements of KIWA GASTEC QA AR 214 for admixtures up to and including 100% hydrogen gas – certifications are available in select countries.
- Excellent chemical resistance
- Medium strength for ease of disassembly
- Cures on active and inactive metals
- Registered to NSF Category P1
- DVGW Approval (EN 751-1): DVGW Reg. No. NG-5146CQ0312
- KIWA GASTEC QA AR 214 certified for hydrogen gas systems
- Easy to apply
- Instant low pressure seal
- Suitable for all metals
- Locks connection against vibration-induced loosening and other stresses
Documents and Downloads
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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 |
LOCTITE® 577
Medium strength, thixotropic, general purpose thread sealant for straight-to-straight and straight-to-taper threaded fittings. Fills the space between threaded parts and seals and locks at the same time.