Kalrez® 6221 FFKM Material Data Sheet

Kalrez® 6221 is a premium white perfluoroelastomer (FFKM) compound engineered for pharmaceutical, biotechnology, food processing, and other high-purity applications. Designed to provide outstanding chemical resistance, excellent steam resistance, and ultra-low extractables, Kalrez® 6221 helps maintain product purity while delivering long-lasting sealing performance in critical processing environments.

This FDA-compliant material is well suited for systems that require repeated sterilization and cleaning, including Water for Injection (WFI) and Steam-in-Place (SIP) processes. Kalrez® 6221 maintains its sealing performance through repeated steam cycles and high-temperature sterilization, making it an excellent choice for applications where cleanliness, regulatory compliance, and equipment reliability are essential.

Download the Kalrez® 6221 Technical Data Sheet

Review the technical data sheet below for detailed information regarding material properties, operating temperatures, chemical compatibility, and recommended applications. If you need assistance selecting the right Kalrez® compound for your application, the sealing specialists at M&P Sealing are available to help identify the best solution for your process.