What Is the LOCTITE® 202 ECO™ Coating for Threaded Fasteners?
LOCTITE® DRI 202 ECO™ is a medium-strength, dry-to-the-touch pre-applied threadlocker and sealant for threaded fasteners. Its acrylic, methacrylate ester formulation remains inert until assembly, when the threads activate the quick-curing resin.
The resin fills voids within the threads and cures to lock and seal the connection while helping prevent loosening caused by vibration. Typical applications range from automotive fasteners to pipe plugs and fittings, with a stated operating range of -54°C to +150°C.
Key Benefits
- Medium-strength threadlocking
- Locks and seals in one pre-applied coating
- Helps prevent vibration-related loosening
- Dry-to-the-touch for clean handling
- Ready for assembly without liquid application
- 10-minute fixture time
- Four-year on-part life
- Operating range of -54°C to +150°C
- Good chemical and solvent resistance
- Suitable for automated, high-volume fastener processing
Where Is LOCTITE® DRI 202 ECO™ Used?
| Application | How DRI 202 ECO Supports the Assembly |
|---|---|
| Carburetor Screws | Provides medium-strength locking |
| Transmission Nuts | Helps resist vibration-related loosening |
| Head Bolts | Locks and seals the threaded connection |
| Truck Axle Bolts | Provides locking performance for demanding threaded assemblies |
| Tower Bolts | Helps maintain threaded connections |
| Transmission Bolts | Combines threadlocking and sealing |
| Pipe Plugs & Fittings | Fills thread voids to help seal connections |
| Production Fasteners | Pre-applied coating allows components to arrive ready for assembly |
Industries & Markets
| Industry or Market | Typical Application |
|---|---|
| Automotive | Threaded vehicle components requiring locking and sealing |
| Heavy-Duty Vehicles | Axle and related vibration-exposed fasteners |
| Powertrain & Transmission | Transmission nuts and bolts |
| Industrial Manufacturing | Medium-strength threaded assemblies |
| Fluid Handling | Pipe plugs and fittings |
| High-Volume Manufacturing | Pre-coated threaded components |
Technical Highlights
| Property | LOCTITE DRI 202 ECO Performance |
|---|---|
| Technology | Acrylic |
| Chemical Type | Methacrylate ester |
| Cure | Anaerobic |
| Application | Threadlocking, sealing |
| Strength | Medium |
| Toxicity | Low |
| Operating Range | -54°C to +150°C |
| On-Part Life | 4 years |
| Cure Time | 72 hours |
| Fixture Time | 10 minutes |
| Breakaway Torque | ≥17 N·m |
| Prevail Torque | ≥10.7 N·m |
Chemical Resistance
| Environment | Temperature | 100 hours | 500 hours | 1,000 hours |
|---|---|---|---|---|
| Motor Oil | 125°C | 117% | 96% | 86% |
| Motor Oil | 87°C | 125% | 112% | 105% |
| Unleaded Gasoline | 22°C | 102% | 113% | 119% |
| Brake fluid | 22°C | 101% | 105% | 114% |
| Ethanol | 22°C | 102% | 112% | 112% |
| 1,1,1 Trichloroethane | 22°C | 104% | 116% | 112% |
| Water/Glycol 50/50 | 87°C | 119% | 112% | 108% |
Looking for Medium-Strength Locking and Sealing?
LOCTITE DRI 202 ECO combines medium-strength threadlocking with sealing performance in a dry-to-the-touch coating that is ready when your components reach the assembly line.