Peter Huber Thermofluid P20.275.50 SilOil (10 Liters)

The Peter Huber Thermofluid P20.275.50 SilOil (Order No. 6158) is a premium, high-temperature silicone-based heat transfer fluid supplied in a 10-liter container. This medium-viscosity SilOil is specifically engineered for demanding thermal processes that require stability and safety at elevated temperatures. With its high flash point and superior oxidative resistance, P20.275.50 is the ideal medium for Huber Unistats, pilot plants, and chemical reactors. It provides a robust thermal buffer and consistent pump lubrication, ensuring that your high-precision temperature control units operate at peak efficiency during long-term heating cycles.

Key Features:

• High-Temperature Capacity: Optimized for a wide working range from +20°C up to +225°C in open systems, and extending to +275°C in externally sealed (closed) systems like Huber Unistats.
• Industrial Volume: The 10-liter container is ideal for large-volume systems or for facilities requiring a significant reserve for multiple units.
• Optimized Viscosity: Features a kinematic viscosity of 50 mm²/s at 25°C, providing excellent lubricity for internal pump seals and stable pressure characteristics.
• Exceptional Thermal Stability: Based on high-quality polydimethylsiloxane, the fluid is chemically inert and maintains its properties over long periods of continuous operation.
• Advanced Safety: Boasts a very high flash point (>250°C) and an ignition temperature of approximately 395°C, minimizing risk in high-heat environments.
• Non-Hazardous: Not classified as a dangerous good or hazardous substance, making it safer for laboratory personnel and easier to store without specialized cabinets.
• Environmentally Mindful: CFC and HCFC-free, and virtually insoluble in water, supporting modern green laboratory initiatives.

Huber P20.275.50 SilOil is meticulously tested to ensure compatibility with all Huber internal components, including heating elements and evaporators. Its low vapor pressure reduces fluid loss at high temperatures, making it a cost-effective and dependable choice for materials testing, pharmaceutical synthesis, and industrial process development.

Frequently Asked Questions

1. Why is the temperature range higher for Huber Unistats?
Unistats use a hydraulically sealed (closed) system that prevents contact between the thermal fluid and ambient oxygen. This protection against oxidation allows the P20.275.50 SilOil to safely reach its maximum temperature of +275°C.

2. Can I use this oil with standard silicone laboratory tubing?
No. Silicone-based fluids will cause silicone rubber hoses and gaskets to swell and fail. You must use Huber’s insulated metal hoses or PTFE/EPDM-based connections for safe operation.

3. How does this fluid compare to M-series SilOils?
The "P" in P20.275.50 stands for "Plus," indicating it is generally higher in viscosity (50 mm²/s) compared to many M-series fluids. This makes it more stable at very high temperatures but less suitable for cryogenic cooling compared to low-viscosity oils.

4. Is there a risk of the fluid catching fire?
While all oils have a fire point, P20.275.50 has a very high fire point (>300°C). When used within its specified range and in well-maintained Huber equipment, the risk is extremely low compared to mineral oils.

5. What should I do if the fluid changes color?
Slight darkening is normal over time at high temperatures. However, if the fluid becomes very dark, develops a burnt odor, or noticeably thickens, it has reached the end of its service life and should be replaced to protect the pump.