Leveraging a 40-year legacy of innovation, DuPont has consistently pioneered the development of O-rings, gaskets, and custom seals designed to excel in the most challenging operational environments. DuPont™ Kalrez® seals, renowned for their time-tested reliability in industrial applications, offer a unique combination of cleanliness, purity, and unmatched chemical resistance. The engineered polymer chains of Kalrez® demonstrate exceptional inertness, withstanding over 1,800 different chemicals and providing high-temperature stability. Manufactured to rigorous quality standards, each Kalrez® part comes with documented traceability, ensuring one of the longest and most predictable lifespans in the industry. The proven, long-term performance of Kalrez® translates into reduced frequency of seal changes, repairs, and inspections, leading to increased process and equipment uptime for heightened productivity and yield.

Manufactured using proprietary processes, Kalrez is a product of advanced polymer technology and is known for its outstanding resilience in harsh environments. The production of Kalrez involves precision molding and compounding techniques, ensuring consistent quality and reliability in every batch. The elastomer is formulated with perfluorinated polymer chains, providing resistance to a wide range of chemicals, including aggressive acids, bases, and solvents.

Kalrez® offers: 

  • Excellent thermal capability versus other elastomers
  • Excellent chemical compatibility
  • Low corrosion

For more information about Alfagomma products, click the link below to see the catalogs.