LOCTITE 4161
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- High-Viscosity Thin-Gap Bonding
- Fast Rubber Fixturing
- Plastic, Rubber, and Metal Bonding
Product Description
LOCTITE 4161 is a one-part, high-viscosity ethyl cyanoacrylate instant adhesive for bonding plastics, rubbers, and metals. Atmospheric moisture initiates cure, and its preferred bond gap is 0.05 mm. At 22 deg C/50% RH, fixture time ranges from <5 seconds on neoprene or nitrile rubber to 100 seconds on zinc dichromate. The curing reaction continues for no less than 24 hours before complete chemical/solvent resistance is reached. The cured adhesive delivers 18 to 26 N/mm^2 lap shear strength on grit-blasted steel under the stated test conditions.
Key features
- High-Viscosity Thin-Gap Bonding: Viscosity is 1,150 to 2,000 mPa s and the preferred gap is 0.05 mm.
- Fast Rubber Fixture: Neoprene and nitrile rubber fixture in <5 seconds under the stated conditions.
- Plastic, Rubber, and Metal Bonding: Applications cover plastics, rubbers, and metals.
Applications
Applications include bonding plastics, rubbers, and metals in thin bond gaps.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
AppearanceAppearance
Transparent, colorless liquidChemistry TypeChemistry Type
Ethyl cyanoacrylateSpecific GravitySpecific Gravity
1.05Physical Properties
ViscosityViscosity
1,150 to 2,000 mPa.sOther Properties
Storage TemperatureStorage Temperature
2 °C to 8 °CThermal Properties
Glass Transition Temperature (Tg)Glass Transition Temperature (Tg)
165 °CThermal ConductivityThermal Conductivity
0.1 W/m.KElectrical Properties
Volume ResistivityVolume Resistivity
10×10¹⁵ Ohms⋅cmAdditional Information
Technical properties
As-Supplied Properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Transparent, colorless liquid | - | Uncured |
| Specific gravity | 1.05 | - | 25 deg C |
| Viscosity | 1,150 to 2,000 | mPa s | Brookfield LVF, spindle 2, 12 rpm, 25 deg C |
| Vapor pressure | <1 | hPa | As supplied |
Technical properties
Final-State Properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Coefficient of thermal expansion | 100 x 10^-6 | K^-1 | ISO 11359-2; after 24 h at 22 deg C |
| Thermal conductivity | 0.1 | W/(m K) | ISO 8302; after 24 h at 22 deg C |
| Glass transition temperature | 165 | deg C | ASTM E 228; after 24 h at 22 deg C |
| Dielectric constant | 2.75 | - | IEC 60250; 1 kHz; after 24 h at 22 deg C |
| Volume resistivity | 10 x 10^15 | ohm cm | IEC 60093; after 24 h at 22 deg C |
| Dielectric breakdown strength | 25 | kV/mm | IEC 60243-1; after 24 h at 22 deg C |
| Lap shear strength | 18 to 26 | N/mm^2 | ISO 4587; grit-blasted steel; after 24 h at 22 deg C |
