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Dow DOWSIL OS-20 Silicone Fluid Clear 15 kg Pail - OS-20 15KG PAIL

$394.43
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SKU: OS-20 3.1KG PAIL
California prop 65
Description
  • Precision cleaning performance. DOWSIL OS-20 Fluid is an odorless, non-VOC compound used for rinsing parts, replacing organic fluids, and cleaning contaminated surfaces. It lifts soils from plastics, metals, and finished assemblies, then prepares those surfaces for subsequent painting, bonding, or sealing. Its low surface tension allows the fluid to penetrate tight geometries and reach areas that heavier solvents struggle to access, supporting thorough and consistent cleaning.
  • Composition and behavior. The product is an ozone-safe, volatile methylsiloxane (VMS) fluid developed specifically for use as a precision cleaning agent and carrier. It is characterized by low surface tension, high purity, and low toxicity, and it evaporates at room temperature so cleaned parts are left dry without a manual drying step. Because it is essentially free of non-volatile residue, it is well suited to sensitive substrates where cleanliness after evaporation matters.
  • Versatility as a carrier. Beyond cleaning, OS-20 serves as a carrier fluid for silicones, allowing other silicone materials to be delivered, diluted, or spread before the volatile carrier evaporates. This dual role of cleaner and carrier makes it a flexible choice in operations that both prepare surfaces and apply silicone-based coatings or treatments.
  • Handling and safety. OS-20 is essentially odorless and is classified by Dow as an ozone-safe, VOC-exempt solvent, which can support environmental and workplace-air goals. Because volatile methylsiloxane fluids are flammable, the fluid must be kept away from heat, sparks, and open flame, used with adequate ventilation, and heavily contaminated fluid handled as ignitable waste requiring appropriate disposal. Always review the Safety Data Sheet before handling.

Recommended For

  • Rinsing and cleaning of manufactured parts and assemblies
  • Replacing organic (hydrocarbon) cleaning fluids
  • Removing contamination from plastics and metals
  • Surface preparation ahead of painting, bonding, or sealing
  • Use as a carrier fluid for delivering or diluting silicones
  • Precision cleaning of sensitive components where low residue matters

Available Variants

  • OS-20 15KG PAIL — 15 kg pail
  • OS-20 3.1KG PAIL — 3.1 kg pail
  • Both variants are the same clear OS-20 fluid and share identical chemistry and performance; they differ only in fill size. The 15 kg pail suits higher-volume or continuous cleaning operations, while the 3.1 kg pail fits smaller lines, intermittent use, or lower-throughput applications.

Product Details

  • Product type: Volatile methylsiloxane (VMS) silicone cleaning fluid
  • Appearance: Clear
  • Odor: Odorless
  • VOC status: Non-VOC / VOC-exempt
  • Key properties: Low surface tension, high purity, low toxicity, room-temperature evaporation
  • Environmental note: Described by Dow as ozone-safe
  • Container sizes: 3.1 kg pail; 15 kg pail

Primary Industries

  • Electronics manufacturing
  • Aerospace
  • Industrial manufacturing
  • Medical device manufacturing
  • Precision cleaning and surface preparation operations

Standards and Certifications

  • California Prop 65 warning applies (this is a warning, not a certification)
  • Described by Dow as ozone-safe and VOC-exempt; no formal third-party certification stated by the source
Reviews

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.