FAQs
What is DOWSIL OS-20 used for?
OS-20 is used to rinse and clean parts, replace organic solvents, and remove contamination from plastics, metals, and assemblies. It also works as a carrier fluid for silicones. Because it lifts soils and then evaporates cleanly, it prepares surfaces for painting, bonding, or sealing across many industrial applications.
Does OS-20 leave a residue after cleaning?
OS-20 is a volatile fluid that evaporates at room temperature, so treated parts are generally left dry once the fluid has flashed off. Its high purity means little non-volatile residue is left behind. Allowing adequate evaporation time helps ensure a clean, dry surface before the next process step.
Is DOWSIL OS-20 flammable, and how should it be handled?
Volatile methylsiloxane fluids of this type are flammable, so OS-20 should be kept away from heat, sparks, and open flame and used with adequate ventilation. Heavily contaminated fluid is treated as ignitable waste requiring proper disposal. Always read the product label and Safety Data Sheets before handling or storing.
Why choose OS-20 over a conventional organic solvent?
OS-20 is odorless, low in toxicity, and described by Dow as ozone-safe and VOC-exempt, which can support environmental and workplace-air goals where organic solvents fall short. Its low surface tension helps it reach tight areas, and its clean, room-temperature evaporation suits sensitive substrates needing residue-free results.
What is the difference between the 3.1 kg and 15 kg pails?
The two pails contain the identical clear OS-20 fluid with the same chemistry and performance; only the fill size differs. Choose the 15 kg pail for higher-volume or continuous cleaning operations, and the 3.1 kg pail for smaller lines, intermittent use, or lower-throughput needs. Selection is purely about consumption.
