Loctite 580 Pipe Sealant
Harmonization Code : 3506.91.90.99 | 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 ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

Main features
- One-Component Sealing System
- Low Pressure Sealing for Inactive Metals
- Room-Temperature Sealing Cure
Product Description
LOCTITE® 580 is a one-component, very-high-viscosity anaerobic thread sealant designed for locking and sealing close-fitting metal pipes and fittings. The off-white methacrylate paste provides lubricity during assembly, supports immediate low-pressure sealing in properly tightened fittings, and cures without heat when confined between metal threaded surfaces.
Key features
- One-component anaerobic system: Requires no mixing and cures when confined in the absence of air between close-fitting metal surfaces.
- Immediate low-pressure sealing: Properly tightened fittings seal instantly to moderate pressures before full cure.
- Formulated for inactive metals: Cures without heat or activator on stainless steel and other inactive metal surfaces.
Applications / Suitable for
- Locking and sealing threaded metal pipes and fittings
- Instrumentation, pumps, valves, hydraulics and compressors
- Water, coolant, fuel-oil and low-pressure steam piping
- Threaded fittings in fossil-fuel, solar and hydro power-plant piping systems
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Typical uncured properties unless identified as LOCTITE Material Specification limits.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Smooth, creamy, off-white paste | — | Uncured; LMS |
| Specific gravity | 1.08 | — | 25 °C |
| Viscosity | 300,000–900,000 | mPa·s (cP) | Brookfield RVF, spindle 7, 2 rpm, 25 °C; LMS |
| Halogen content | ≤200 | ppm | LMS |
| Chlorine content | ≤200 | ppm | LMS |
| Sulfur content | ≤1,500 | ppm | LMS |
After-processing / final-state properties
Typical cured-material properties and test results. Breakaway-torque values identified as LMS are specification-controlled limits.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Coefficient of thermal expansion | 0.1 | K−1 | ISO 11359-2 |
| Coefficient of thermal conductivity | 0.1 | W/(m·K) | ISO 8302 |
| Specific heat | 0.3 | kJ/(kg·K) | Cured material |
| Breakaway torque | ≥0.9 | N·m | ISO 10964; 3/8 × 24 grade 2 steel nuts and bolts; 24 hours at 25 °C; LMS |
| Breakaway torque | ≥2.3 | N·m | ISO 10964; 3/8 × 24 grade 2 steel nuts and bolts; cured 24 hours at 93 °C and tested at 25 °C; LMS |





















