Kalrez® Composite Seals


Kalrez® Composite Seals for Standard and Complex Geometries

For demanding standard and complex composite seal applications, Kalrez® perfluoroelastomer parts are the elastomer of choice designed and molded to your specific requirements.  Kalrez® composite seals offer unique one of a kind parts, in a wide variety of custom family shapes, standard geometry, and miscellaneous bonded parts, including small and large parts.  Whether you have a niche application or high volume runs, DuPont can meet your sealing requirements.  Kalrez® composite seals are available in a variety of compounds depending on the thermal, chemical and plasma resistance required.

Kalrez® composite seal applications include: micro valves, micro-pumps, downhole oil and gas, semiconductor chip process equipment, ink jet, beverage dispensers, car wash pumps, printers, paint spray, refineries, CPI and more.

Types of Shapes

Unique composite shapes include special profiles and rectangular-shaped seals for slit valves, rubber to metal bonding parts, such as bonded door seals and bonded poppets, profiled quartz tube seals, diaphragms, lip seals, tubing and other specialized configurations.

Benefits of Kalrez® Custom Seals

  • Meets the rigors of AS9100 aerospace standard quality certification, and is a certified designer and manufacturer of seals and sealing devices per AS9100. (manufacturing facility in Newark, DE)
  • Proprietary technology for bonding compounds to a variety of materials, including aluminum, plastic, stainless steel, metal alloys, PEEK, brass, etc. Improves performance, and reduces cost by integrating the seal and substrate into one part
  • High quality machined and molded prototypes

DuPont Centers of Excellence (COE) give customers the advantage of collaboration through application and testing expertise within our global network.


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