Loctite 577 Thread Sealant 50ml

Loctite 577 Thread Sealant is a medium strength yellow anaerobic thread sealant engineered for maximum efficacy in thread sealing. This industrial-grade adhesive permanently locks and seals metal pipes and fittings, preventing costly fluid and gas leaks caused by vibration-induced loosening and other operational stresses. Whether you are securing metal pipes or threaded assemblies, this premium thread sealant provides a robust, leak-proof seal on all metals—including both active and inactive metal surfaces.

Why Choose Loctite 577?

• Instant Low-Pressure Seal: Provides an immediate, dependable seal for metal pipes and fittings right after assembly.
• No Creep, Shrink, or Shred: The engineered formula cures reliably without shrinking or shredding, preventing contamination of fluid systems.
• Excellent Chemical & Thermal Resistance: Offers robust structural endurance against harsh industrial chemicals and wide temperature changes.
• Reduced Liquid Migration: Features a high-viscosity (70,000 - 130,000 mPa·s) thixotropic paste consistency that flows less after application.
• Cures on All Metals: Formulated to react and cure effectively on both active metals like brass and inactive substrates like stainless steel without requiring activators.

Technical Specifications

• Product Type: Anaerobic Thread Sealant
• Strength: Medium
• Color: Yellow
• Container Size: 50ml
• Certifications: NSF P1 Registered (Reg. No. 123001), DVGW Approval (EN 751-1, Reg. No. NG-5146CQ0312)

Simple Application Instructions

1. Clean: For optimal results, clean all internal and external surfaces with a Loctite cleaning solvent and allow to dry completely.
2. Apply: Apply a 360° bead of liquid thread sealant to the leading threads of the male fitting, leaving the first thread completely free.
3. Assemble: Assemble and wrench-tighten the fittings in accordance with recommended practices. The formula will begin curing once it is confined between the mating metal surfaces in the absence of air.

Frequently Asked Questions (FAQ)

What is Loctite 577 used for?

Loctite 577 is a medium strength anaerobic thread sealant designed for the locking and sealing of metal pipes, fittings, and other threaded components. It is specifically formulated to prevent assemblies from leaking or loosening due to shock, vibration, and thermal expansion.

Can Loctite 577 be disassembled?

Yes. Under normal conditions, connections can be disassembled cleanly using standard hand tools. For larger joint diameters (over 1 inch) or long thread engagements, apply localized heat to approximately 250°C and disassemble while hot.

Does Loctite 577 work on stainless steel?

Yes. Loctite 577 offers robust performance across all metal surfaces. It is highly effective and cures reliably on both active metals (such as brass and copper) as well as inactive metal substrates (such as stainless steel and aluminum).

Is Loctite 577 safe for food processing environments?

Loctite 577 holds an NSF P1 registration (Reg. No. 123001). This means it is approved for use as a sealant in and around food processing areas where there is no possibility of direct food contact.