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2025
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The Difference Between Fumed Silicone and Standard Silicone
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The Difference Between Fumed Silicone and Standard Silicone
— Material Selection Guide in Silicone Sheet and Silicone Hose Production
In the production of silicone products, material selection directly impacts product performance and service life. Especially for silicone sheets and silicone hoses, the two most commonly used base materials are standard silicone and fumed silicone. Though both belong to the silicone rubber family, they differ significantly in structure, properties, and application scenarios, making material selection a critical step in product design.
1. What Are Standard Silicone and Fumed Silicone?
Standard silicone typically refers to silicone rubber filled with precipitated silica. It is widely used in industrial and consumer products due to its lower cost and ease of processing.
Fumed silicone uses fumed silica as the primary filler. With higher purity, finer particle size, and superior reinforcement capability, it is often chosen for high-performance applications.
2. Key Differences in Raw Material Processing
Precipitated silica is produced through a wet chemical process, resulting in larger, less uniform particles with more impurities.
Fumed silica, on the other hand, is made via high-temperature gas-phase hydrolysis, resulting in smaller, more uniform particles and higher surface activity.
This difference in structure leads to major variations in product transparency, strength, and aging resistance.
3. Performance Comparison
| Property | Standard Silicone (Precipitated) | Fumed Silicone |
|---|---|---|
| High-Temperature Resistance | 150–180°C | 200–250°C |
| Tear Strength | Moderate | High |
| Aging & Weather Resistance | Average | Excellent |
| Transparency | General | High |
| Odor Residue | Slight | Virtually none |
| Cost | Lower | Higher |
4. Application Considerations in Silicone Sheet & Hose Production
The choice between standard and fumed silicone in producing silicone sheets and silicone hoses depends on the required performance level:
Standard silicon is suitable for general industrial gaskets, insulation, and low-temp applications.
Fumed silicone is ideal for high-performance sectors like food processing, medical equipment, electronics, and laboratory systems.
Examples:
For high-temp silicone sheets used in industrial sealing, fumed silicone is recommended for heat stability and strength.
For general-purpose industrial hoses, standard silicone offers a good cost-performance balance.
5. Why Choose Diao Silicone Sheets and Hoses?
Diao offers a full range of material options — from standard silicone to high-grade fumed silicone — to match varying application needs.
Advantages of Diao Silicone Sheets:
✅ Available in standard or fumed silicone, depending on usage
✅ High surface smoothness and stable thickness, ideal for precision cutting
✅ Supports custom functions such as high-temp resistance, flame retardancy, insulation, or anti-static
✅ Available in rolls or sheets up to 1.5m wide
Advantages of Diao Silicone Hoses:
✅ Fumed silicone option available for up to 220°C continuous heat resistance
✅ One or two layers of polyester fiber reinforcement for durability and flexibility
✅ Suitable for hot water circulation, electrical insulation, and machinery damping
✅ Customizable color, size, and length for various equipment connections
In the production of silicone sheets and hoses, both fumed and standard silicone have their place. Selecting the right material ensures not only cost-efficiency but also long-term product performance. Diao offers traceable raw materials, tested performance, and stable manufacturing processes, providing high-quality, customizable silicone solutions.
For detailed technical data or product recommendations, feel free to contact Diao’s technical team.
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Our factory specializes in the production and supply of high quality silicone hoses, food grade silicone hoses, medical silicone hoses, fuel hoses, radiator hoses, air rubber hoses, EPDM sealing strips, spiral protective covers and silicone plates and other trucks, automotive rubber accessories (support OEM and ODM).
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