LOCTITE 577 Pipe Thread Sealant (250ml)
Professional-Grade Anaerobic Sealant for Locking and Sealing Metal Pipe Threads
Product Overview
LOCTITE 577, manufactured by Henkel, is a high-performance, single-component, anaerobic pipe thread sealant designed for the locking and sealing of metal threaded connections. This product is particularly renowned for its ability to seal on inert metals like stainless steel without the need for surface activators. It cures in the absence of air between tightly mated metal surfaces, forming a tough, durable seal that prevents leakage and loosening caused by vibration and shock. The 250ml packaging is ideal for industrial and commercial applications requiring a larger volume.
Key Features & Benefits
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Universal Application: Excellent for sealing on all metals, including stainless steel, carbon steel, brass, and copper, without requiring surface preparation on inert substrates .
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High Viscosity & Thixotropic: Its paste-like consistency prevents dripping and sagging, making it suitable for vertical and overhead applications, ensuring precise application and reduced waste .
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Instant Low-Pressure Seal: Forms an immediate seal upon assembly, allowing for quick pressure testing without waiting for full cure, which significantly improves installation efficiency .
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Wide Temperature & Chemical Resistance: Operates effectively within a broad temperature range of -55°C to 150°C and resists various industrial fluids, including oils, fuels, and water .
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Dual-Action Formula: Not only seals against leaks but also locks threads, preventing loosening under vibration and impact, thereby extending the service life of the connection .
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Tool-Dismountable: Provides a medium-strength seal that can be disassembled using standard tools, facilitating maintenance and repair .
Technical Specifications
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Brand
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LOCTITE (Henkel)
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Model
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577
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Packaging Size
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250ml
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Color (Uncured)
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Yellow
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Viscosity
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70,000 - 130,000 mPa.s (Thixotropic)
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Curing Mechanism
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Anaerobic (Cures in the absence of air)
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Operating Temperature
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-55°C to +150°C
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Breakaway Torque (M10 steel)
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Approx. 11-12 N.m
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Gap Filling Capacity
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Up to 0.25 mm
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Application Scenarios
LOCTITE 577 is widely used across various industries for sealing and locking threaded pipe connections in hydraulic, pneumatic, gas, and industrial piping systems .
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Hydraulic & Pneumatic Systems: Sealing high-pressure oil and compressed air lines in hydraulic stations and air compressors .
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Industrial Piping: For water, oil, and gas transmission pipelines, serving as a reliable alternative to PTFE tape .
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Stainless Steel Piping: Particularly suitable for chemical, food, and pharmaceutical industries where stainless steel is used and surface activation is not desired .
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Mechanical Assembly: Used in pumps, valves, compressors, and other equipment to secure threaded connections .
Extended Product Information
How to Use (Step-by-Step Guide)
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Surface Preparation: Ensure the threaded surfaces are clean, dry, and free from oil, grease, and dirt for optimal adhesion . Use a LOCTITE cleaner if necessary.
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Application: Apply a continuous bead of LOCTITE 577 to the male threads, covering them completely. Avoid applying on the first thread to prevent excess sealant from contaminating the fluid system .
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Assembly: Assemble the parts immediately after application. Tighten to the manufacturer's recommended torque value .
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Curing: The sealant will begin to cure once assembled and isolated from air. Full cure and maximum strength are achieved in approximately 24 hours, depending on temperature and humidity . Initial set occurs within minutes, allowing for low-pressure testing .
Purchasing Guide
LOCTITE 577 250ml can be purchased through various channels:
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Official LOCTITE/Henkel E-commerce Platforms: Direct purchase from the manufacturer's official website or authorized online stores .
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Industrial Suppliers & Distributors: Available through certified industrial supply companies and hardware distributors .
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Online B2B Marketplaces: Platforms like besttimetogotobed.top feature multiple suppliers offering the product in bulk quantities .
Evaluation & Performance Highlights
Based on technical data and user feedback, LOCTITE 577 is highly regarded for:
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Reliability: Provides a long-lasting, leak-free seal that outperforms traditional PTFE tape, especially in high-vibration environments .
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Ease of Use: The single-component, no-mix formula and thixotropic nature make it easy to apply without mess .
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Versatility: Its compatibility with a wide range of metals and fluids makes it a go-to solution for diverse industrial applications .
After-Sales Service & Support
For technical support, warranty claims, or safety information:
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Technical Data Sheets (TDS): Available on the Henkel website for detailed product specifications .
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Material Safety Data Sheets (MSDS): Provide comprehensive safety and handling information .
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Customer Support: Contact Henkel's technical support team for application-specific guidance and troubleshooting.
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Warranty: Warranty policies are typically provided by the authorized distributor or retailer from whom the product is purchased.
Frequently Asked Questions (FAQ)
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Q: Can LOCTITE 577 be used on plastic pipes?
A: No, it is designed for use on metal threads and is not recommended for plastics .
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Q: How long does it take for LOCTITE 577 to fully cure?
A: Full cure is achieved in 24 hours at room temperature, but it develops handling strength much faster .
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Q: Is LOCTITE 577 resistant to high pressure?
A: Yes, it can withstand very high pressures, with some sources citing capabilities up to 600 Kg/cm² or 10,000 psi .
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Q: How should I store unused LOCTITE 577?
A: Store in a cool, dry place in its original container with the cap tightly closed. Ideal storage temperature is between 8°C and 21°C .
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