Materials: Inner layer – Rubber (NBR, FKM, EPDM); Outer layer – PTFE/FEP.
Temperature Range: -20°C to 200°C (rubber); -200°C to 260°C (PTFE/FEP).
Pressure Range: Static up to 40 MPa; Dynamic up to 5 MPa.
Hardness: 50–90 Shore A (rubber).
Friction Coefficient: 0.05–0.1.
Thickness Control: PTFE/FEP coating ±0.03 mm.
Chemical Resistance: Strong acids, bases, solvents, and high-purity media.
Certifications: FDA, USP Class VI, RoHS, REACH.
Customization: Custom rubber types, hardness, and coating thickness available.
In high-demand industries where durability, chemical resistance, and efficiency are paramount, PTFE-coated rubber O-rings offer an ideal sealing solution. Combining the elastic properties of rubber with the corrosion-resistant capabilities of PTFE (Polytetrafluoroethylene) or FEP (Fluorinated Ethylene Propylene), these O-rings are engineered to withstand extreme environments without compromising performance.
PTFE-coated rubber O-rings combine two advanced materials: the inner elastic rubber layer and the outer protective PTFE/FEP layer. The inner rubber provides superior rebound and sealing force, while the outer layer forms a robust chemical barrier, protecting against harsh chemicals, acids, and solvents.
These O-rings are designed for use in environments that expose seals to extreme chemicals, high-purity fluids, and high temperatures. Their chemical resistance far exceeds traditional sealing materials, making them ideal for industries like chemical processing, pharmaceuticals, and semiconductor manufacturing.
With a friction coefficient as low as 0.05-0.1, PTFE-coated rubber O-rings reduce wear and tear on moving parts. This contributes to extended operational life and reduced maintenance needs, resulting in improved equipment efficiency and cost savings.
The PTFE-coated surface is dense and non-porous, preventing the absorption of media. This feature ensures that the O-rings meet stringent cleanliness standards such as FDA and USP Class VI, making them perfect for pharmaceutical and food-grade applications.
The dynamic coating process allows precise control of the PTFE/FEP thickness (±0.03mm) and rubber hardness (50-90 Shore A), enabling customization to meet specific sealing requirements.
These O-rings are capable of withstanding a wide temperature range from -50°C to +230°C, depending on the rubber base material. They also support high-pressure applications with static sealing capabilities up to 40MPa and dynamic sealing pressures up to 5MPa.
Engineered for outdoor use, these O-rings are resistant to UV rays, ozone, and radiation, providing up to three times the lifespan of traditional PTFE seals.
PTFE-coated rubber O-rings are ideal for sealing in aggressive chemical environments, such as in reactors, centrifuges, valves, and pumps handling corrosive liquids, high-temperature steam, and more. They’re commonly used in chlor-alkali, pesticide, and dye production equipment.
In pharmaceutical manufacturing, bioreactors, and sterilization equipment, these O-rings ensure clean and safe operation by providing reliable seals in systems handling pure water, injectable solutions, and semiconductor etching processes.
For the food industry, PTFE-coated O-rings provide high-quality sealing solutions for lubrication systems, filling valves, and sterilization equipment used in high-temperature food processing and packaging.
In aerospace, military, and high-pressure research applications, PTFE-coated rubber O-rings ensure the integrity of fuel and hydraulic systems, deep-sea equipment, and high-pressure reactors, offering unparalleled reliability in extreme environments.
By extending service life and reducing downtime for replacements, PTFE-coated rubber O-rings contribute to significant maintenance savings, cutting maintenance costs by up to 60%. These O-rings also simplify inventory management by replacing multiple sealing components with a single, highly effective solution.
Our PTFE-coated O-rings are manufactured without the use of heavy metals and comply with RoHS/REACH regulations. Biobased rubber options are also available for environmentally conscious projects.
Each batch of PTFE-coated O-rings undergoes 100% leak-tightness testing and precise laser measurement to ensure optimal performance. Material certifications and chemical resistance reports are provided, and prototype samples can be tested before full-scale production.
PTFE-coated rubber O-rings offer an advanced sealing solution for industries requiring high-performance materials that can withstand harsh chemicals, extreme temperatures, and high-pressure conditions. Their customizable design, exceptional durability, and cost-saving benefits make them an essential choice for engineers and operators across multiple sectors.
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