LETBOND® 5500 Series Pipe & Thread Sealants (Anaerobic)
Description
The LETBOND® 5500 Series comprises high-performance anaerobic sealants engineered for the secure assembly of threaded pipes and fittings. These products cure when confined in the absence of air between close-fitting metal surfaces, creating a professional-grade seal that is resistant to vibration, high pressure, loosening, and leakage.
LETBOND® 5569 Thread Sealant: A high-strength liquid formulation designed for the permanent locking and sealing of metal pipes and threaded fasteners.
LETBOND® 5577 Pipe Sealant: A medium-strength, high-viscosity paste specifically developed for metal pipe joints. It is particularly effective for stainless steel and coarse-threaded fittings, providing a reliable seal while remaining removable for future maintenance.
Features
- Anaerobic Curing Technology: Cures efficiently within metal-to-metal interfaces in the absence of oxygen to form a robust, thermoset plastic seal.
- Vibration & Leak Resistance: Effectively resists intense vibration and shock, preventing fastener loosening and the leakage of fluids or gases.
- Superior Chemical Resistance: Highly resistant to a wide range of industrial fluids, including engine oils, fuels, transmission fluids, and common solvents.
- Extreme Temperature Stability: Engineered for harsh industrial environments with a service temperature range of -55°C to +150°C.
- Versatile Substrate Compatibility: Suitable for various thread types and fittings, ranging from permanent high-strength locking (5569) to coarse-thread sealing (5577).
- Safety-First Formulation: Contains no known carcinogens, ensuring compliance with strict industrial health and safety standards.
Applications
LETBOND® 5569 (High Strength)
- Permanent locking and sealing of heavy-duty metal screws and pipe fittings.
- Threaded fastener security in automotive engines and transmission systems.
- Anti-loosening for bolts in high-vibration and high-pressure operating environments.
LETBOND® 5577 (Medium Strength / Removable)
- General sealing of metal pipe threads and plumbing connections.
- Optimized for stainless steel and passive metal fittings where traditional sealants struggle.
- Sealing of gas pipelines and coarse-threaded joints requiring eventual disassembly.
Specifications
| Model | Color | Viscosity (cps) |
Cure time (Fixture / Full) |
Bonding Substrates | Temp. Range (°C) | Recommended Application |
|---|---|---|---|---|---|---|
|
5569 |
Brown Liquid |
350 – 550 |
15 min / 24 hr |
EPDM, PC, Metal |
-55~150 |
Antenna bonding; uneven surface repair |
|
5577 |
Yellow Paste |
70,000 – 130,000 |
20 min / 24 hr |
Metal pipe threads and Stainless Steel |
-55~150 |
Coarse threads, stainless steel, gas pipes, passive metals |
Notes:
- The values above are for reference only; actual values are based on the Certificate of Analysis (COA) of the shipped batch.