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Henkel Adhesive Technologies

Henkel Adhesive Technologies

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Thread sealants


General purpose thread sealant for metal pipes and fittings

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.

All marks used are trademarks and/or registered trademarks of Henkel and its affiliates in the US, Germany, and elsewhere.

Part no. (SKU/IDH) 2068749
LOCTITE 577, 50ml tottle

Size Please make your selection 50 ml



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 0.01in (0.25 mm) 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.

Product category:

Thread sealants


Agency approvals / certificates / specifications:


Application method:

Dispense system,Manual


Pipe sealing,Thread sealing

Breakaway torque, Steel, M10:

33.0 N·m (295.0 in./lb.)



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 °C - 150.0 °C (-65.0 °F - 300.0 °F)

Physical form:


Recommended for use with:

Metal,Metal: passive metal,Thread type: tapered

Viscosity, 20 RPM:

25000.0 mPa·s

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