Description

Description

DOWSIL™ 550 Silicone Fluid is a transparent silicone fluid formulated for high-performance industrial environments. It is thermally stable and designed for equipment exposed to radiation, including hydraulic arrestors, hydraulically actuated valves, and instruments used in nuclear plants.
The fluid provides a high flash point, chemical inertness, low volatility, compressibility, and resistance to heat and radiation. These properties make it suitable for applications where radiation exposure is a critical concern.
Packaged in a 20 kg pail, this material supports demanding operating conditions and specialized equipment requirements.

Key Features

• Thermally stable silicone fluid

• High flash point

• Chemical inertness

• Low volatility

• Compressibility

• Resistant to heat and radiation


Applications

• Equipment exposed to radiation

• Hydraulic arrestors

• Hydraulically actuated valves

• Instruments used in nuclear plants

• Industrial applications where radiation exposure exists


Benefits

• Supports operation under radiation exposure

• Maintains performance under heat

• Provides stable chemical properties for sensitive systems

• Suitable for demanding hydraulic and instrumentation environments


Product Specs

Product Name DOWSIL™ 550 Silicone Fluid
Appearance Clear
Typical Use: Hydraulic arrestors (snubbers); hydraulically actuated valves and instruments in nuclear plants; other radiation-exposed applications
Brand DOWSIL
Color Clear
Flash Point >101.1 °C
Service Temperature -57 to 232 °C
Specific Gravity 1.065 @ 25 °C
Thermal Conductivity 0.00036
Viscosity 125

Categories

• Silicone Fluids

• Specialty Chemicals

• Dow Products

• Industrial Fluids

Reviews

FAQs

What is DOWSIL™ 550 Silicone Fluid used for?

DOWSIL™ 550 is used in demanding industrial environments, especially where radiation exposure is present. It supports hydraulic arrestors, hydraulically actuated valves, and sensitive instrumentation found in nuclear facilities. Its stability and chemical inertness make it ideal for equipment requiring dependable performance under extreme operating conditions.

Why is this silicone fluid suitable for radiation-exposed equipment?

This fluid is engineered to resist radiation while retaining its physical and chemical stability. Its low volatility, high flash point, and thermal resilience allow it to function reliably in systems exposed to radiation, ensuring consistent performance in critical industrial and nuclear plant applications where standard fluids may degrade.

What performance advantages does this fluid offer?

The fluid provides excellent thermal stability, chemical inertness, high flash point, and low volatility. These qualities support long-term reliability in hydraulic and mechanical systems exposed to heat, pressure, or radiation. Its stable properties help maintain equipment performance and reduce the risk of fluid breakdown during demanding, continuous operation.

What are the typical operating conditions for this material?

DOWSIL™ 550 performs across a wide service temperature range from -57°C to 232°C. Its viscosity, thermal stability, and radiation resistance make it suitable for use in high-stress environments. These conditions include nuclear plant equipment, hydraulic systems, and industrial instruments requiring dependable fluid behavior under extreme variations.

How is DOWSIL™ 550 packaged and handled?

This product is supplied in a 20 kg pail for industrial use. It should be handled with standard chemical-handling precautions and stored in a clean, dry environment. Its clear appearance, stable properties, and resistance to chemical breakdown help ensure long shelf life and consistent performance when properly stored.