NA-SUL 437 is a unique, water soluble rust preventive concentrate. It can be cut back in either cold or warm water to provide a transparent water and additive solution. NA-SUL 437 has excellent hard water tolerance and exhibits exceptional storage stability both as the concentrate and in water solution formulations. NA-SUL 437 deposits a thin film on metal parts that becomes hydrophobic upon drying, enabling parts to resist rusting for extended periods, even in the 100% humidity environment of the Humidity Cabinet (ASTM D1748) test.
The thin protective film is removed easily with alkaline cleaners.
Water solutions of NA-SUL 437 are ideal for dip application of metal parts for protection during indoor storage. Wet parts may be dipped in NA-SUL 437 solutions, replacing the need for solvent based dewatering fluids. NA-SUL 437 is also highly recommended for in-can protection for waterborne aerosols keeping the interior of metal cans rust-free.
| Metal Type | Ashless |
| Metal Content | 0% |
| Viscosity @ 40°C | 300 cSt |
| Application Advantage | Easy removal, Fast drying, Forms clear solution, Humidity resistance, Multi-metal protection, Rust inhibition, Sprayable, Storage stability, Thin film |
| Formulation Advantage | Ashless, Easy to handle, Water soluble, Waterborne |
| Market Application | Rust preventive |
| Product Group | Rust preventive |
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