LETBOND® 2200 Series Threadlocking Adhesives
Description
The LETBOND® 2200 Series is a high-performance, single-component acrylic anaerobic adhesive specifically designed for the permanent fastening and efficient sealing of threaded fasteners. These adhesives cure rapidly when confined in the absence of air between close-fitting metal surfaces. Once cured, they create a robust bond that effectively prevents loosening, leakage, and corrosion caused by vibration and shock.
Whether you require low-strength formulas for easy disassembly or high-strength, high-temperature resistant grades for heavy-duty applications, the 2200 Series offers a comprehensive range of solutions to meet diverse industrial needs.
Features
- Advanced Anaerobic Curing: Reacts quickly in the absence of oxygen within metal interfaces. Initial fixture time ranges from 10 to 40 minutes, reaching full cure at room temperature within 6 to 24 hours (curing can be accelerated with primers).
- Comprehensive Strength Grades: Available in low, medium, high, and medium-high strength specifications to accommodate everything from small precision screws to heavy-duty industrial bolts.
- Versatile Viscosity Range: Options range from 20 to 8,000 cps, including low-viscosity wicking types for post-assembly sealing and high-viscosity types for superior gap filling and impact resistance.
- Thermal & Chemical Stability: Selected grades withstand extreme temperatures up to 230°C. The series exhibits excellent resistance to oil, water, and a wide array of industrial chemicals.
- Wide Material Compatibility: Suitable for use on steel, plated surfaces, stainless steel, and inactive metals. Specialized formulas (such as 2276) are engineered to perform effectively even on oil-contaminated surfaces.
Applications
The LETBOND® 2200 Series offers specialized formulations tailored to specific industrial requirements :
- Precision Instruments & Electronics: Ideal for small screw fastening and vibration resistance where easy disassembly is required (Low Strength: 2222).
- Plated or Passive Metal Surfaces: Medium-strength locking for chrome, galvanized, or low-reactivity metal fasteners (2242 / 2243).
- High-Vibration Heavy Equipment: High-strength bonding for large-diameter bolts subject to intense shock and structural stress (2262 / 2271).
- Extreme Thermal Environments: Specialized sealing and locking for large bolts in high-temperature operating conditions (2272).
- Contaminated or Inactive Substrates: Engineered for rapid curing on oily surfaces or non-active metal bases (2276).
- Heavy Machinery & Motor Housings: Maximum-strength assembly for permanent fixtures and high-torque load transmission (2277).
- Wicking & Porosity Sealing: Ultra-low viscosity for penetrating pre-assembled fasteners, sealing weld porosities, or repairing metal castings (2290).
Specifications
| Model | Color | Viscosity (cps) | Strength Level | Breakaway Torque (N·m) | Prevailing Torque (N·m) | Temp. Range (°C) | Features |
|---|---|---|---|---|---|---|---|
|
2222 |
Purple |
1,200–1,500 |
Low |
8 |
4 |
-54~150 |
Removable for small screws |
|
2242 |
Blue |
1,200–1,500 |
Medium |
17 |
5 |
-54~150 |
Medium strength; removable |
|
2243 |
Blue |
1,200–3,000 |
Medium |
20 |
7 |
-54~150 |
Suitable for plated & stainless steel; oily surfaces
|
|
2262 |
Red |
1,600–5,500 |
Medium-High |
22 |
10 |
-54~150 |
High viscosity; chemical resistant |
|
2271 |
Red |
800–1,200 |
High |
26 |
36 |
-54~150 |
For heavy-duty bolt locking |
|
2272 |
Red |
4,000–6,000 |
High |
20 |
30 |
-54~230 |
High-temperature resistant
|
|
2276 |
Green |
1,400–1,600 |
Medium-High |
22 |
8 |
-55~150 |
Non-corrosive to ABS/PC; oily surfaces; fast cure; low-activity metals |
|
2277 |
Red |
6,000–8,000 |
High |
32 |
32 |
-54~150 |
Heavy-duty applications |
|
2290 |
Green |
20–70 |
Medium-High |
7 |
30 |
-54~150 |
Wicking grade for penetration & repair |
Notes:
- The values above are for reference only; actual values are based on the Certificate of Analysis (COA) of the shipped batch.
- It is recommended to use this series with LETBOND® Activator LB-7649 for optimal performance.