LOCTITE 425
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
- Fast Plated-Fastener Fixturing
- Low-Strength Serviceable Retention
- Pre- or Post-Applied Locking
Product Description
LOCTITE 425 is a dark-blue, low-viscosity, one-part cyanoacrylate adhesive for low-strength threadlocking and retaining on metal and plastic fasteners. It can be applied before or after assembly and cures with atmospheric moisture. On plated metal and plastic fasteners, fixture is achieved in less than two minutes, while full strength develops within 24 hours. The low-strength cured joint supports adjustment or disassembly rather than permanent locking. It is suited to tamperproofing screw heads and potentiometers and to serviceable fastener retention within the -54 to 85 deg C operating range.
Key features
- Pre- or post-applied locking: The low-viscosity liquid can be placed before assembly or wicked onto assembled fasteners.
- Fast plated-fastener fixture: Plated metal and plastic fasteners fixture in less than two minutes under documented conditions.
- Low-strength serviceability: The cured adhesive provides low-strength retention for adjustment, tamperproofing, or later disassembly.
Applications / Suitable for
- Low-strength locking of metal and plastic fasteners
- Tamperproofing screw heads and potentiometers
- Preassembled or post-applied retaining applications
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Physical Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Typical values for the product before cure, application, or assembly.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Dark blue liquid | - | As supplied |
| Chemical type | Ethyl cyanoacrylate / aliphatic ester | - | As supplied |
| Components | One part | - | No mixing required |
| Specific gravity | 1.1 | - | 25 deg C |
| Viscosity | 40 to 80 | mPa s | Brookfield LVF, spindle 1, 30 rpm, 25 deg C |
| Cure mechanism | Humidity | - | Atmospheric moisture |
After-processing / final-state properties
Typical values for the cured or installed product under the listed conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Fixture time | <2 | min | Plated metal and plastic fasteners |
| Full-strength development | 24 | h | Normal humidity-cure conditions |
| Operating temperature range | -54 to 85 | deg C | Typical application range |
| Dielectric breakdown strength | 19.7 | kV/mm | IEC 60243-1 |
| Volume resistivity | >1 x 10^15 | ohm cm | IEC 60093 |
| Torque strength, 4-40 fastener | 0.12 / 0.14 | N m | Breakaway / prevailing; zinc-plated, untorqued, cured 24 h at 22 deg C |
| Torque strength, 10-32 fastener | 0.36 / 0.23 | N m | Breakaway / prevailing; zinc-plated, untorqued, cured 24 h at 22 deg C |
