PTFE Coated O-Rings by Puja Seals in Pune, India – ideal for high-temperature, chemical-resistant sealing in industrial, pharma, and food-grade applications. PTFE-coated O-rings have the elastic and resilient core of a rubber O-ring (usually Viton or Silicone) with an exceptionally thin layer of low friction and chemically resistant Polytetrafluoroethylene( PTFE) coating. The design offers excellent chemical compatibility and low friction. It installs easily, has dynamic use, and has a long service life, especially in aggressive media or high temperatures where standard O-rings can become damaged.