LOCTITE 2620
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
- Elevated-Temperature Threadlocking Paste
- Thixotropic Paste Placement
- Medium-to-High Fastener Retention
Product Description
LOCTITE 2620 is a red, high-viscosity anaerobic threadlocker paste for locking and sealing metal fasteners in elevated-temperature assemblies. The one-component material requires no mixing and cures without air between close-fitting metal surfaces. Its thixotropic paste consistency supports controlled placement on threads, while the medium-to-high cured strength resists loosening and leakage under shock and vibration. High-temperature resistance is a primary selection factor for this grade. Torque performance applies to the specified steel and phosphate-and-oil fastener configurations under the defined cure conditions.
Key features
- Extreme-temperature positioning: The formulation is intended for threaded assemblies requiring elevated-temperature resistance.
- Thixotropic paste placement: High viscosity helps maintain coverage on threaded surfaces before assembly.
- Medium-to-high retention: Cured joints resist loosening and leakage under shock and vibration.
Applications / Suitable for
- Locking and sealing threaded metal fasteners
- Shock- and vibration-exposed threaded assemblies
- Elevated-temperature fastener applications
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Additional Information
As-supplied / before-processing properties
Typical values for the product before cure or assembly.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Red paste | - | Uncured |
| Components | One | - | No mixing required |
| Cure mechanism | Anaerobic | - | Secondary cure with activator when required |
| Specific gravity | 1.16 | - | Typical at 25 deg C |
| Viscosity | 20,000 to 70,000 | mPa s | Cone and plate; 50 mm parallel plates; 0.5 mm gap; 50 s^-1; 25 deg C |
After-processing / final-state properties
Typical values for the cured product under the listed conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Breakloose torque | 11.4 to 34 | N m | ISO 10964; pretorqued 5 N m; degreased 3/8 x 16 grade 5 steel; cured 24 h at 25 deg C |
| Breakaway torque | 18.2 | N m | ISO 10964; degreased 3/8 x 16 steel; cured 72 h at 25 deg C |
| Prevail torque | 1.1 | N m | ISO 10964; degreased 3/8 x 16 steel; cured 72 h at 25 deg C |
| Breakloose torque | 27.9 | N m | ISO 10964; pretorqued 5 N m; degreased 3/8 x 16 steel; cured 72 h at 25 deg C |
| Breakloose torque | 18.5 | N m | ISO 10964; pretorqued 5 N m; phosphate-and-oil fasteners as received; cured 72 h at 25 deg C |
| Prevail torque | 2.5 | N m | ISO 10964; pretorqued 5 N m; phosphate-and-oil fasteners as received; cured 72 h at 25 deg C |
