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Dow DOWSIL 550 Silicone Fluid Clear 20 kg Pail - 550 FLUID 20KG PAIL $4,794.89

Dow DOWSIL 550 Silicone Fluid Clear 4 kg Pail - 550 FLUID 4KG PAIL

$997.70
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SKU: 550 FLUID 4KG PAIL
California prop 65
Description
  • Radiation- and heat-resistant fluid. Dow DOWSIL 550 Fluid Clear is a thermally stable silicone fluid used for equipment exposed to radiation, such as equipment in nuclear plants, hydraulic arrestors, and hydraulically actuated valves. It offers a high flash point, chemical inertness, low volatility, compressibility, and resistance to heat and radiation.
  • Composition and properties. DOWSIL 550 is a phenyl-containing silicone fluid characterized by thermal stability and durability under demanding conditions. Distributor technical data lists a kinematic viscosity around 125 cSt, a specific gravity near 1.06, and a flash point of roughly 101°C (214°F), reflecting its high-flash, low-volatility nature.
  • Where it is used. Its combination of heat and radiation resistance makes it suitable for specialized industrial environments where radiation exposure is a critical concern. It can also function as a lubricant, heat-transfer medium, or thermostat fluid, drawing on its low volatility, good compressibility, and heat-transfer characteristics.
  • Handling notes. As with all silicone fluids, users should confirm compatibility with their equipment and review the product and Safety Data Sheets before use. The fluid supports demanding operating conditions and specialized equipment requirements across its rated performance range.

Recommended For

  • Equipment exposed to radiation (e.g. nuclear plants)
  • Hydraulic arrestors (snubbers)
  • Hydraulically actuated valves
  • Use as a lubricant or heat-transfer medium
  • Thermostat fluid applications

Product Details

  • Product type: Thermally stable phenyl silicone fluid
  • Appearance: Clear
  • Kinematic viscosity: ~125 cSt (distributor data)
  • Specific gravity: ~1.06 (distributor data)
  • Flash point: ~101°C / 214°F (distributor data)
  • Key properties: High flash point, chemical inertness, low volatility, compressibility, heat and radiation resistance
  • Container size: 4 kg pail

Primary Industries

  • Nuclear and power generation
  • Industrial hydraulics
  • Heat-transfer and thermal management
  • Specialized industrial equipment

Standards and Certifications

  • None specified by source
Reviews

FAQs

What makes DOWSIL 550 suitable for radiation environments?

DOWSIL 550 is a thermally stable, phenyl-containing silicone fluid that resists heat and radiation, which is why it is used for equipment in nuclear plants and similar settings. Combined with chemical inertness and low volatility, this resistance helps it maintain performance where radiation exposure is a critical concern.

What are its key physical properties?

Distributor technical data lists a kinematic viscosity around 125 cSt, a specific gravity near 1.06, and a flash point of roughly 101°C (214°F). These figures reflect its high-flash, low-volatility character. Always confirm the exact values for your grade against the current technical data sheet before design use.

Can DOWSIL 550 be used as a hydraulic or heat-transfer fluid?

Yes. It is used in hydraulic arrestors (snubbers) and hydraulically actuated valves, taking advantage of its compressibility, and it can also serve as a lubricant, heat-transfer medium, or thermostat fluid thanks to its low volatility and good heat-transfer characteristics across a demanding temperature range.

Why does the high flash point matter?

A high flash point (around 101°C per distributor data) means the fluid resists ignition at elevated temperatures, improving safety in hot or demanding environments. Together with low volatility, it helps the fluid stay stable and lose little material over time in high-temperature or enclosed equipment.

Is DOWSIL 550 chemically inert?

Dow describes the fluid as chemically inert, meaning it resists reacting with many surrounding materials, which supports long service life and reliable performance in specialized equipment. As with any fluid, confirm compatibility with your specific components and seals, and review the Safety Data Sheet before use.