LOCTITE 554
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
- High Solvent Resistance
- Thread Sealing Up to 50mm
- One-Component Sealing System
Product Description
LOCTITE® 554 is a one-component, medium-viscosity anaerobic thread sealant formulated for metal threaded fittings and pipe up to 50 mm in diameter. The red methacrylate ester liquid cures when confined between close-fitting metal surfaces in the absence of air, providing maximum solvent resistance in demanding service environments. It is recommended for refrigeration systems and applications involving strong chemicals, including metal and fiber plants, chemical and paper processing facilities, waste treatment operations, and textile manufacturing.
Key features
- High solvent resistance: Designed for threaded fittings exposed to refrigeration service and strong chemicals.
- Thread sealing up to 50 mm: Intended for close-fitting metal pipe and fittings up to 2 inches in diameter.
- One-component anaerobic cure: Requires no mixing and cures when confined between mating metal surfaces.
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 | Red liquid | — | Uncured material |
| Fluorescence | Negative | — | Uncured material |
| Components | One component | — | No mixing required |
| Specific gravity | 1.02 | — | At 25°C |
| Viscosity | 1,500–3,500 | mPa·s | Brookfield RVT, 25°C; spindle 3, 20 rpm |
| Flash point | >100 | °C | SDS value |
| Density | 1.08 | g/cm³ | At 20°C; SDS value |
After-processing / final-state properties
Typical cured-material properties depend on the stated cure schedule, substrate, specimen, 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 |
| Prevail torque | ≥10.8 | N·m | ISO 10964; 3/8 × 24 steel nuts and bolts; cured 24 hours at 22°C |
| Breakaway torque | 27.2 | N·m | ISO 10964; 3/8 × 24 steel nuts and bolts; cured 72 hours at 22°C |
| Prevail torque | 23.8 | N·m | ISO 10964; 3/8 × 24 steel nuts and bolts; cured 72 hours at 22°C |
| Maximum application temperature | 149 | °C | Typical stated application limit |
