Silicone Gasket with PTFE Bonded Surface
Silicone gaskets with PTFE bonded surfaces combine the flexibility and thermal resistance of silicone with the chemical inertness and low friction of PTFE. This hybrid design is ideal for applications requiring a non-stick, corrosion-resistant, and high-temperature sealing solution, such as in chemical processing, food, and pharmaceutical industries.
1. Product Overview
The PTFE layer bonded to silicone provides additional protection against aggressive chemicals, prevents material sticking, and improves the sealing surface's durability. This ensures reliable performance under high temperature, high pressure, and corrosive conditions.
- Temperature resistance: -60°C to +230°C
- Excellent chemical and corrosion resistance
- Low surface friction prevents sticking and wear
- Maintains elasticity and compression set resistance
Key Advantage: PTFE-bonded silicone gaskets provide long-lasting sealing with minimal maintenance, especially in aggressive chemical and high-temperature environments.
2. Material Construction
| Material | Temperature Range | Chemical Resistance | Key Feature |
|---|---|---|---|
| Silicone (VMQ) | -60°C to +230°C | Moderate | Flexible, compression set resistant |
| PTFE Coating | -200°C to +260°C | Excellent | Non-stick, highly resistant to acids, bases, and solvents |
| Reinforced PTFE | -200°C to +260°C | Superior | Improved wear resistance for dynamic applications |
Material Tip: PTFE bonding ensures the silicone surface does not adhere to aggressive chemicals, making it ideal for repeated assembly/disassembly applications.
3. Performance Testing
3.1 Chemical Compatibility Test
- Expose PTFE-silicone gasket to acids, alkalis, and solvents at working temperatures
- Check for swelling, degradation, or delamination
3.2 Thermal Aging Test
- Test gasket at high temperatures for prolonged periods
- Measure loss of elasticity, compression set, and surface integrity
3.3 Leak Test
- Verify sealing performance under pressure
- Ensure no leakage occurs even under thermal cycling
4. Installation and Maintenance
- Ensure flange or groove surfaces are smooth and clean before installation
- Align gasket carefully to avoid PTFE layer damage
- Do not exceed recommended compression to avoid delamination
- Periodic inspection recommended in aggressive chemical or high-temperature environments
Maintenance Tip: Replace gaskets if PTFE layer shows wear, cracks, or chemical damage, even if silicone base is intact.
Conclusion
Silicone gaskets with PTFE bonded surfaces provide superior chemical resistance, thermal stability, and low friction performance. Proper installation, material selection, and routine inspection ensure reliable sealing in harsh chemical and high-temperature applications.
About Us
Best Seal offers custom silicone gaskets with PTFE bonded surfaces for industrial, chemical, food, and pharmaceutical applications. We provide flexible sizes, hardness options, and OEM customization to meet demanding sealing requirements.
- Custom OD/ID, thickness, and bolt patterns
- Material options for chemical and high-temperature resistance
- ISO 9001 certified quality assurance
- Fast delivery with large warehouse inventory
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Why choose us?
- Our Rubber Gaskets are widely used in a variety of industries including automotive, construction, and mining.
- Innovation, strict quality control, honest service, pursuit of excellence, mutual benefit and win-win are the company's consistent pursuit. It is our policy to provide customers with high-quality, safe and reliable technology and products.
- We have a team of highly skilled professionals who are dedicated to producing high-quality Rubber Gaskets.
- We have established the enterprise spirit of "unity, pioneering, dedication and progress", adopted the world standard equipment and advanced management experience, and gradually ranked among the forefront of this Silicone Gasket With PTFE Bonded Surface industry in technology, scale and management.
- We offer a wide variety of Rubber Gaskets to meet the diverse needs of our customers.
- Corporate culture is the fundamental to maintain the Evergreen Foundation of the enterprise, so we attach great importance to the shaping of the internal culture of the enterprise.
- We offer a range of payment options for our customers to make purchasing our Rubber Gaskets hassle-free.
- Our company insists on scientific development and constantly adjusts and optimizes industrial structure.
- Our Rubber Gaskets are made with non-toxic materials, making them safe for use in food and medical industries.
- We firmly believe that focusing on creating high-quality products and focusing on improving product quality will help our company achieve better development.
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