Product Range & Functional Classification
Fluorosilicone oils are available across a broad, engineering-oriented product range designed to meet different chemical exposure levels, temperature windows, and functional requirements. The portfolio can be systematically classified by base structure, viscosity range, and functional performance, enabling precise material selection rather than one-size-fits-all substitution.
1. Product Range by Base Structure
- FVMQ Fluorosilicone Oils
Standard trifluoropropyl-modified fluorosilicones and the mainstream choice for most applications requiring fuel and oil resistance. - PF (Partially Fluorinated) Silicone Oils
Cost-optimized grades offering moderate fuel and oil resistance where full fluorosilicone performance is not required. - HF (High-Fluorine) Fluorosilicone Oils
High fluorine content grades engineered for severe chemical, solvent, and fuel environments with minimal swelling and long service life.
2. Product Range by Viscosity
- Ultra-low viscosity (10–50 cSt) – precision lubrication, sensors, micro-mechanisms
- Low to medium viscosity (100–500 cSt) – general lubrication, damping, automotive and aerospace components
- Medium to high viscosity (1,000–5,000 cSt) – sealing oils, fuel-contact components
- Very high viscosity (10,000–30,000 cSt) – heavy damping, grease compounding, static seals
3. Functional Classification
To address specific operating demands, fluorosilicone oils are further classified by functional performance:
- LT (Low Temperature) – enhanced flexibility and flow at extremely low temperatures
- HT (High Temperature) – improved stability under continuous high-temperature operation
- LV (Low Volatility) – reduced evaporation for vacuum and aerospace environments
- FR (Fuel-Optimized) – maximized resistance to gasoline, diesel, and jet fuels
- EI (Electrical Insulation) – stable dielectric properties for sensors and electronics
- GR (Grease Base Oil) – high-viscosity base oils for fluorosilicone grease formulations
Siliconchemicals Fluorosilicone oils
SiliconChemicals® Fluorosilicone Oils are high-performance silicone fluids engineered for fuel-, oil-, and solvent-exposed environments where conventional PDMS silicone oils are insufficient. By incorporating fluoroalkyl side groups into the siloxane backbone, these fluids combine silicone-level thermal stability with enhanced chemical and fuel resistance, enabling reliable performance across demanding industrial duty windows.
Typical Applications
- Aerospace & Aviation: Fuel systems, seal oils, damping fluids
- Automotive: Fuel-contact lubrication, sensors, specialty greases
- Chemical Processing: Valves, diaphragms, seals under aggressive media
- Electronics: Dielectric and protective fluids in harsh environments
- Industrial Systems: Extreme-condition lubrication and motion control
Why SiliconChemicals
- Engineering-driven selection across structure, viscosity, and function
- Consistent quality & documentation (TDS/SDS, batch control)
- Customization capability for viscosity, volatility, and media resistance
- Reliable global supply for industrial, automotive, and aerospace users
Need selection support?
SiliconChemicals® provides application-focused guidance to match fluorosilicone oils precisely to your temperature profile, media exposure, and performance targets.
Chemical Structure & Functional Mechanism
Fluorosilicone oils are chemically modified silicone fluids designed to extend the performance limits of conventional silicone oils in fuel-, oil-, and solvent-exposed environments. Their unique behavior is governed by both the siloxane backbone and the fluorinated side-chain architecture, which together define how the fluid interacts with temperature, chemicals, and surrounding materials.
Fluorosilicone oils do not rely on additives for their core performance.
Their resistance to fuels, oils, and temperature extremes is intrinsic to the molecular structure, making them inherently more stable and predictable than modified PDMS systems.
This structure–function relationship is why fluorosilicone oils are trusted in aerospace, automotive fuel systems, chemical processing equipment, and high-reliability electronics—applications where failure is not an option.
Typical Applications
Fluorosilicone oils are selected in applications where fuel, oil, or aggressive chemical exposure must be combined with wide temperature capability, stable viscosity, and long-term reliability. Their use is driven by duty conditions, not by industry alone.
Aerospace & Aviation
- Fuel-system lubrication and damping fluids
- Seal oils for O-rings and gaskets exposed to jet fuel
- Motion control and damping in instruments and actuators
- Low-volatility fluids for high-altitude and vacuum-adjacent environments
Key drivers: fuel resistance, low volatility, thermal stability, long service life.
Automotive & Transportation
- Fuel-contact lubrication (gasoline, diesel, biofuel blends)
- Oxygen sensors and exhaust-adjacent components
- Assembly lubrication for fuel-system seals
- Specialty fluorosilicone greases (via grease base oils)
Key drivers: resistance to fuels and additives, cold-start performance, elastomer compatibility.
Chemical Processing & Industrial Equipment
- Valve, diaphragm, and seal lubrication in chemically exposed systems
- Damping fluids in control and metering devices
- Lubrication where oils, solvents, or mixed hydrocarbons are present
Key drivers: chemical resistance, viscosity stability, reduced swelling and extraction.
Electronics & Electrical Systems
- Protective and dielectric fluids for sensors and connectors
- Moisture-resistant insulation fluids in harsh environments
- Low-residue, low-volatility protection for sensitive components
Key drivers: dielectric stability, cleanliness, controlled volatility.
Industrial Lubrication & Motion Control
- Precision damping fluids for shock absorbers and motion-control units
- Lubrication in systems requiring predictable viscosity–temperature behavior
- Sealing and lubrication in extreme environments where PDMS oils fail
Key drivers: stable damping response, wide temperature range, durability.
Sealing Systems & Elastomer Compatibility
- Lubrication of FVMQ fluorosilicone rubber seals
- Long-life seal oils minimizing swelling in fuel contact
- Static and dynamic sealing in aerospace and chemical systems
Key drivers: compatibility with fluorosilicone elastomers, fuel resistance.
Grease Formulation (via Fluorosilicone Grease Base Oils)
- Base oils for fluorosilicone greases used in fuel- and oil-exposed locations
- High-viscosity lubrication where conventional greases degrade
Key drivers: high viscosity, chemical stability, grease compatibility.
Fluorosilicone oils are typically applied where standard silicone oils fail chemically and where pure fluorinated fluids are unnecessary or impractical. Their role is critical in systems requiring a balanced combination of chemical resistance, temperature performance, and functional reliability across aerospace, automotive, chemical, electronic, and industrial sectors.
Why Use Fluorosilicone oils ?
Fluorosilicone oils are used when standard silicone oils (PDMS) can no longer meet the chemical or environmental demands of an application, but where fully fluorinated fluids would be unnecessary, overly rigid, or cost-prohibitive. Their value lies in a unique balance of properties that no single alternative material can provide.
You use fluorosilicone oils when an application requires:
- Continuous or repeated fuel/oil exposure
- Wide temperature performance
- Stable viscosity and low volatility
- Seal compatibility and long-term reliability
They are not general-purpose fluids—but in fuel-contact, chemically exposed, or reliability-critical systems, they are often the optimal and sometimes the only viable solution.
How to Choose the Right fluorosilicone oils ?
Selecting the correct fluorosilicone oil is an engineering decision, not a catalog lookup. The right choice comes from matching the oil’s molecular structure, viscosity, and functional grade to the real duty window of your application.
Below is a professional, step-by-step selection logic used in aerospace, automotive, and chemical industries.
You choose fluorosilicone oils correctly by answering five questions:
- What chemicals will it touch?
- What temperatures will it really see?
- What viscosity does the function require?
- Is a functional grade (LT / HT / LV / FR / EI / GR) necessary?
- What service life and reliability are expected?
Fluorosilicone oils are not general-purpose fluids. They are chosen because failure is unacceptable—fuel systems, aerospace components, chemical equipment, and high-reliability electronics.
Packaging & Storage
Packaging: 500 g / 1 kg / 5 kg / 25 kg / 200 kg drums / 1000L IBC container (Customized packaging is available).
Need help selecting the right fluorosilicone oils for your application?
At SiliconChemicals, our technical team supports customers from initial material selection to formulation optimization and scale-up.
- Request product recommendations based on your application and process
- Ask for TDS / SDS and compliance documentation
- Discuss custom viscosity, functionality, or regulatory grades
- Get support for industrial, electronic, food-contact, or medical applications
👉 Contact SiliconChemicals today to discuss your requirements and identify the most suitable fluorosilicone oils solution for reliable, long-term performance.
“The information provided herein is based on general industry experience and is intended for reference purposes only. Actual performance and optimal usage conditions may vary depending on formulation, processing methods, substrate characteristics, and end-use requirements. Users are responsible for conducting their own tests and evaluations to determine suitability for their specific applications. No warranty, express or implied, is made regarding the completeness, accuracy, or applicability of this information.”