LOCTITE 545
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
- One-Component Sealing System
- Thread Sealing and Locking
- Assembly Lubricity Sealant Formulation
Product Description
LOCTITE® 545 is a single-component, medium-viscosity anaerobic thread sealant designed for locking and sealing close-fitting metal pipes and fittings. The purple methacrylate ester formulation cures when confined between metal surfaces in the absence of air, helping prevent loosening and leakage caused by shock and vibration. It is specially formulated to provide lubricity during assembly and is suitable for hydraulic and pneumatic threaded connections.
Key features
- Thread sealing and locking: Helps prevent leakage and loosening in close-fitting metal threaded assemblies.
- Assembly lubricity: Formulated to support easier assembly of metal pipes and fittings.
- 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
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 | Purple liquid | — | Uncured material |
| Components | One component | — | No mixing required |
| Viscosity | 9,000–20,000 | mPa·s | Brookfield RVT, 25°C; spindle 3, 2.5 rpm |
| Specific gravity | 1.02 | — | At 25°C |
| Flash point | >93 | °C | Tagliabue closed cup; 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 | 80 × 10−6 | 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 | N·m | ISO 10964; M10 steel nuts and bolts; cured 24 hours at 22°C |
| Compressive shear strength | ≥1.5 | N/mm² | ISO 10123; steel pins and collars; cured 24 hours at 22°C |
| Cold-strength test limit | −75 | °C | Product tested to this temperature |
