LOCTITE 569
Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg
Main features
- Low-Viscosity Sealing Application
- Vibration-Resistant Thread Sealing
- Broad Fluid Resistance
Product Description
LOCTITE® 569™ is a one-component, low-viscosity anaerobic thread sealant designed for locking and sealing close-fitting metal pipes and fittings. The brown methacrylate ester liquid cures when confined between mating metal surfaces in the absence of air, helping prevent loosening and leakage caused by shock and vibration. Its low-strength formulation supports service disassembly, while its fluid resistance makes it suitable for industrial threaded connections exposed to oils, fuels, water, transmission fluid, brake fluid, and phosphate-ester fluids.
Key features
- Low-viscosity thread sealing: Flows into close-fitting metal threads to support complete coverage of the threaded interface.
- Vibration-resistant locking: Helps prevent threaded fittings from loosening or leaking under shock and vibration.
- Broad fluid resistance: Retains performance after extended exposure to common industrial oils, fuels, water, and hydraulic fluids.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical properties of the uncured material; values are reference data rather than guaranteed product specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Acrylic | — | Uncured material |
| Chemical type | Methacrylate ester | — | Uncured material |
| Appearance | Brown liquid | — | Uncured material |
| Fluorescence | Negative | — | Uncured material |
| Components | One component | — | No mixing required |
| Strength classification | Low | — | Thread-sealing application |
| Specific gravity | 1.05 | — | At 25°C |
| Viscosity | 300–500 | mPa·s | Cannon-Fenske, ISO 3104 |
| Density | 1.049 | g/cm³ | At 20°C; SDS value |
| Flash point | >100 | °C | Tagliabue closed cup; SDS value |
After-processing / final-state properties
Typical cured-material properties depend on the stated cure schedule, substrate, assembly geometry, surface condition, and test method.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Coefficient of thermal expansion | 0.1 | K−1 | ISO 11359-2 |
| Thermal conductivity | 0.1 | W/(m·K) | ISO 8302 |
| Specific heat | 0.3 | kJ/(kg·K) | Typical cured-material property |
| Breakaway torque | ≥2.8 | N·m | ISO 10964; degreased 3/8 × 24 grade-2 steel nuts and bolts; cured 24 hours at 22°C |
| Prevail torque | ≥1.1 | N·m | ISO 10964; degreased 3/8 × 24 grade-2 steel nuts and bolts; cured 24 hours at 22°C |
| Breakaway torque after 1 hour | ≥1.1 | N·m | ISO 10964; degreased 3/8 × 24 grade-2 steel nuts and bolts; 22°C |
| Prevail torque after 1 hour | ≥0.6 | N·m | ISO 10964; degreased 3/8 × 24 grade-2 steel nuts and bolts; 22°C |
| Motor-oil resistance | 100 | % initial strength | MIL-L-46152 motor oil at 87°C; 720-hour exposure |
| Unleaded-gasoline resistance | 100 | % initial strength | At 87°C; 720-hour exposure |
| Phosphate-ester resistance | 100 | % initial strength | At 87°C; 720-hour exposure |
| Brake-fluid resistance | 78 | % initial strength | At 87°C; 720-hour exposure |
