LOCTITE 635
Harmonization Code : 3824.99.92.97 | Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included: other : other : other
Main features
- High-Strength Cylindrical Retention
- Medium-Viscosity Application Control
- Anaerobic One-Part Metal Cure
Product Description
LOCTITE 635 is a green, medium-viscosity one-component anaerobic retaining compound for high-strength bonding of cylindrical metal parts. It fills the clearance between close-fitting components and cures after air is excluded, locking rotors on shafts, bushings and sleeves, and press-fit assemblies. A 1,500 to 2,500 mPa s viscosity supports controlled application before assembly. The cured material develops measured compressive-shear strength on steel pins and collars, with strength increasing under the specified heat-cure schedules. This high-strength grade is intended for joints where permanent retention is preferred over routine disassembly.
Key features
- High-strength cylindrical retention: Measured steel pin-and-collar shear values support permanent retaining applications.
- Medium-viscosity placement control: A 1,500 to 2,500 mPa s viscosity supports controlled coverage of cylindrical fits.
- Anaerobic one-part cure: The compound cures in confined metal joints without mixing.
Applications / Suitable for
- Retaining rotors on shafts
- Locking bushings and sleeves
- Augmenting press-fit cylindrical assemblies
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Physical Properties
Mechanical Properties
Additional Information
As-supplied / before-processing properties
Typical values and characteristics for the product before cure, application, or assembly.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Green opaque liquid | - | As supplied |
| Chemical type | Dimethacrylate ester | - | One-component material |
| Specific gravity | 1.1 | - | 25 deg C |
| Viscosity | 1,500 to 2,500 | mPa s | Brookfield RVT, spindle 3, 20 rpm, 25 deg C |
| Cure mechanism | Anaerobic | - | Confined between close-fitting metal surfaces |
| Strength class | High strength | - | Retaining-compound positioning |
After-processing / final-state properties
Typical values for the cured, bonded, treated, or in-service product under the listed conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Elongation at break | <2 | % | Cured material |
| Compressive shear strength | >=13.8 | N/mm^2 | Steel pins and collars; 30 min at 22 deg C with Activator 7471 on one side |
| Compressive shear strength | >=20 | N/mm^2 | Steel pins and collars; cured 24 h at 22 deg C |
| Compressive shear strength | >=31 | N/mm^2 | Steel pins and collars; cured 1 h at 93 deg C, tested at 22 deg C |
| Compressive shear strength | >=9.6 | N/mm^2 | Steel pins and collars; 1 h at 93 deg C plus 1 h at 149 deg C, tested at 149 deg C |
