
Loctite 567 Thread Sealant 250ml
Loctite 567 Thread Sealant 250ml is a low strength, off-white thixotropic methacrylate thread sealant engineered for maximum efficacy in thread sealing. This industrial-grade adhesive permanently cures in the absence of air and by contact with metals when confined within threads up to M80/R3”, preventing costly fluid and gas leaks caused by shock, vibration, and thermal cycling. Whether you are securing coarse metal threads or heavy-duty industrial piping fittings, this premium thread sealant provides a robust, leak-proof seal on all metal connections—including active metals like brass and passive substrates like stainless steel or aluminum.
Why Choose Loctite 567?
- Instant Low-Pressure Seal: Provides an immediate, reliable seal right after assembly to prevent leakage during system setup.
- No Creep or Shrinkage: The thixotropic formula cures cleanly without shrinking, ensuring it won't block or contaminate fluid lines.
- High Viscosity Formula: Featuring a high/very high viscosity (280,000 - 800,000 mPa·s), the paste stays exactly where applied without running or dripping.
- Ideal for Coarse Threads: Perfectly suited for heavy-duty industrial connections and large fittings up to 3 inches in diameter.
- Wide Temperature Resistance: Maintains its dependable sealing performance across a harsh operational temperature range from -55°C to +150°C (-65°F to +480°F).
Technical Specifications
- Product Type: Anaerobic Methacrylate Thread Sealant
- Strength: Low
- Color: Off-White
- Container Size: 250ml
- Certifications: UL Approved
Simple Application Instructions
- Clean: For optimal results, clean all internal and external surfaces with a Loctite cleaning solvent and let dry to remove any grease or cutting oils.
- Apply: Apply a 360° bead of liquid thread sealant to the leading threads of the male fitting, leaving the first thread free.
- Assemble: Assemble and tighten the parts as required. The formula will begin curing once confined between the mating metal surfaces in the absence of air.
Frequently Asked Questions (FAQ)
What is Loctite 567 used for?
Loctite 567 is a low strength thread sealant designed for locking and sealing coarse metal threads and fittings. It is specifically formulated to prevent industrial piping components from leaking or loosening due to vibration, shock, and thermal expansion.
Can Loctite 567 be disassembled?
Yes. With a breakaway torque rating of 1.7Nm, components secured with Loctite 567 can be easily disassembled using standard hand tools without requiring excessive force or heat application.
Does Loctite 567 work on stainless steel?
Yes. Loctite 567 offers robust performance across all metal surfaces. It is highly effective on both active metals (such as brass and copper) as well as passive substrates (such as stainless steel and aluminum).
Is Loctite 567 safe for certified industrial environments?
Loctite 567 is UL approved. This means it is approved for use in compliant commercial and industrial trade environments requiring standard-certified sealing solutions.

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