LOCTITE 493
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
- Very-Low-Viscosity Capillary Bonding
- Fast Metal-Focused Fixturing
- Broad Rubber-Plastic Bonding
Product Description
LOCTITE 493 is a clear to slightly hazy, very-low-viscosity methyl cyanoacrylate instant adhesive for general-purpose bonding, with particular suitability for metals. The one-part liquid also bonds supported rubber and plastic substrates and cures through atmospheric moisture without mixing. A cone-and-plate viscosity of 1 to 4 mPa s supports capillary flow into very close-fitting joints. Fixture time ranges from under 10 seconds on neoprene and nitrile rubber to 20 to 60 seconds on tested metals under the specified conditions. Full chemical and solvent resistance develops after at least 24 hours.
Key features
- Very-low-viscosity capillary flow: A 1 to 4 mPa s viscosity supports penetration into very close-fitting bondlines.
- Metal-focused instant bonding: The methyl cyanoacrylate formulation is particularly suited to rapid metal assembly.
- Fast rubber and plastic fixture: Tested elastomers fixture in under 10 seconds, with short fixture times on ABS and other plastics.
Applications / Suitable for
- Capillary bonding of close-fitting metal joints
- Rapid rubber and elastomer bonding
- General-purpose plastic assembly
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Physical Properties
Mechanical Properties
Electrical Properties
Curing Conditions
Additional Information
As-supplied / before-processing properties
Typical values for the product before cure, application, or assembly.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Clear to slightly hazy, colorless liquid | - | Uncured |
| Chemical type | Methyl cyanoacrylate | - | As supplied |
| Components | One part | - | No mixing required |
| Specific gravity | 1.1 | - | 25 deg C |
| Viscosity | 1 to 4 | mPa s | Cone and plate, 25 deg C, shear rate 3,000 s^-1 |
| Viscosity | 1 to 10 | mPa s | Brookfield LVF, spindle 1, 60 rpm, 25 deg C |
| Vapor pressure | <1 | hPa | As supplied |
After-processing / final-state properties
Typical values for the cured or installed product under the listed conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Fixture time, degreased mild steel | 20 to 40 | s | 22 deg C, 50% RH; time to 0.1 N/mm^2 shear strength |
| Fixture time, nitrile rubber | <10 | s | 22 deg C, 50% RH; time to 0.1 N/mm^2 shear strength |
| Fixture time, ABS | 10 to 30 | s | 22 deg C, 50% RH; time to 0.1 N/mm^2 shear strength |
| Coefficient of thermal expansion | 100 x 10^-6 | K^-1 | ISO 11359-2; after 24 h at 22 deg C |
| Lap shear strength, grit-blasted steel | 20 to 30 | N/mm^2 | ISO 4587; cured 24 h at 22 deg C |
| Lap shear strength, grit-blasted aluminum | 15 to 22 | N/mm^2 | ISO 4587; cured 24 h at 22 deg C |
| Dielectric breakdown strength | 25 | kV/mm | IEC 60243-1; after 24 h at 22 deg C |
