Specifying Teflon™ Encapsulated O-Rings:

Specifying Teflon™ Encapsulated O-Rings: Firstly, encapsulated O-rings consist of an elastomer core, typically silicone or FKM (Viton), which is completely encapsulated in a seamless, durable, and leak-free jacket of Teflon FEP or PFA resins, size is defined by their inside diameter and cross section. Moreover, these O-rings are coupled with the chemical resistance of PTFE (Teflon) and the resilience and sealing force of the elastomer core. Consequently, for these reasons, Teflon encapsulated O-rings are the engineer’s choice for demanding applications.

M-Cor’s Teflon™ Encapsulated O-Rings Engineering Questionnaire:

1. What types of chemicals are M-Cor’s Teflon™ encapsulated O-rings resistant to, and what are their limits in terms of chemical compatibility?
Answer: M-Cor’s  Teflon™ encapsulated O-rings are designed to offer superior chemical resistance, especially to aggressive chemicals like acids, bases, and solvents. The silicone or Viton® cores enhance their compatibility with a wide range of chemicals. However, specific limitations exist with certain ketones and amines where performance may degrade. CLICK HERE FOR CHEM COMPATIBILITY

2. Can you provide the temperature range within which your Teflon encapsulated O-rings maintain optimal performance?
Answer: M-Cor’s Teflon™ encapsulated O-rings effectively operate within a temperature range from -60°C to +200°C. The exact range can vary slightly depending on the core material chosen (silicone or Viton®), with Viton® generally offering better high-temperature resistance. CLICK HERE FOR TEMPERATURE CHART.

3. What are the gas permeation rates for your O-rings in applications involving high-pressure gases?
Answer: Our O-rings exhibit low gas permeation rates, crucial for high-pressure applications. The specific rates will depend on the gas type and operating conditions, but generally, Teflon encapsulation barrier properties significantly reduce gas permeability. CLICK HERE FOR GAS PERMEATION BLOG

4. What are the water transmission rates through these O-rings?
Answer: The water transmission rates through our Teflon encapsulated O-rings are extremely low due to Teflon’s inherent non-porosity. therefore,this makes them ideal for applications where moisture barrier is critical.CLICK HERE WATER TRANSMISSION RATE

5. How resistant are your O-rings to compression set, and how does this influence their long-term sealing integrity?
Answer: The compression set resistance of our O-rings is excellent, ensuring that they maintain effective sealing performance over long periods and under harsh conditions. Accordingly,this resistance helps prevent the loss of sealing force and dimensional stability, critical in maintaining system integrity. CLICK HERE FOR COMPRESSION SET BLOG

6. Are M-Cor’s Teflon™ encapsulated O-rings compliant with FDA and USP standards, and can you provide documentation to support this? Answer. The material that our encapsulated o-ring  is manufactured from complies with FDA and USP Class VI standards, making them suitable for pharmaceutical and food applications. We provide full traceability and documentation for each batch to support compliance claims.

7. How do the costs of your Teflon encapsulated O-rings compare to those of other sealing solutions, such as pure Teflon or traditional elastomeric rings? Answer: While the initial cost of Teflon encapsulated O-rings is higher than that of traditional elastomeric rings, they offer better long-term value due to their superior durability and performance under extreme conditions. They are cost-effective compared to pure Teflon rings when considering factors like ease of installation and overall life-cycle costs.

8. Can you provide examples of specific applications where your Teflon encapsulated O-rings have been effectively utilized?
Answer:  Our O-rings are widely used in chemical processing, pharmaceutical manufacturing, and aerospace applications due to their robust performance in aggressive environments. For example, they have been used in high-purity fluid handling systems in semiconductor manufacturing, where chemical stability and purity are paramount. SEE SEMICON PAGE

9. What technical support and warranty provisions do you offer for your Teflon encapsulated O-rings?
Answer: We provide comprehensive technical support, including installation guidance and troubleshooting. Our O-rings come with a warranty that covers defects in materials and workmanship to ensure customer satisfaction and performance assurance.

This questionnaire and its responses should help assess the suitability of Teflon encapsulated O-rings for specific applications, considering their operational, regulatory, and economic aspects.

Comparison Table:

Conclusion Selecting the right Teflon encapsulated O-ring involves a thorough understanding of the application’s mechanical, chemical, and thermal requirements. Proper specification ensures reliability and efficiency, reducing downtime and maintenance costs. Always refer to the latest industry guidelines and manufacturer data for the most effective use of these sealing solutions.

See Material Info for comprehensive mechanical properties for elastomer and encapsulation types

Our sealing experts can recommend your best choice for specific applications.

For sealing consultation contact: customerservice@m-cor.com