LOCTITE 577 THREAD SEALANT 50ML
M-577Seal and lock metal threads with confidence using Loctite® 577, the trusted medium-strength, general-purpose thread sealant engineered for metal pipes, fittings, and threaded assemblies. Designed to provide an instant, low-pressure seal, Loctite 577 prevents leakage, loosening, and corrosion caused by vibration, heat, or mechanical stress — ensuring reliable performance in demanding industrial environments.
Formulated as a non-shrinking, non-creeping anaerobic paste, Loctite 577 cures in the absence of air between close-fitting metal surfaces to form a durable, chemical-resistant seal. It offers excellent thermal and chemical resistance, cures on both active and inactive metals, and features a medium viscosity (25,000 mPa·s) for smooth, precise application with minimal migration.
Ideal for maintenance, plumbing, and mechanical assembly, Loctite 577 is suitable for sealing all coarse metal threads — from stainless steel to brass — and is certified for industrial and food-grade applications with NSF P1 (No. 123001) and DVGW (EN 751-1) approvals.
Key Features:
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Medium-strength thread sealant for locking and sealing metal threads
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Instant low-pressure seal – prevents leaks immediately after assembly
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Non-shrinking, non-creeping formula ensures reliable long-term sealing
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Excellent chemical and temperature resistance
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Cures on all metals, including stainless steel and passive substrates
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Prevents vibration-induced loosening
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NSF P1 Reg. No.: 123001 – food-safe certification
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DVGW Approval (EN 751-1): NG-5146CQ0312
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Colour: Yellow
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Temperature resistant: –55°C to +180°C
Specifications:
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Brand: Loctite®
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Model: 577
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Type: Thread Sealant (Anaerobic Paste)
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Colour: Yellow
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Size: 50 mL
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Viscosity: 25,000 mPa·s
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Strength: Medium
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Cure Type: Anaerobic
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Base: Paste
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Temperature Range: –55°C to +180°C
Reliable, versatile, and easy to apply — Loctite® 577 provides a professional-grade seal for metal pipe threads in industrial, mechanical, and plumbing applications.
