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New Addition to DuPont™ Kalrez® Portfolio Offers New Alternatives for Sanitary Seals

DuPont launched its new perfluoroelastomer parts, DuPont™ Kalrez® LS390, for use as sanitary seals in food handling, beverage, and pharmaceutical applications where FDA, USP VI at 121°C and Japan Pharmacopeia compliance are required.
Kalrez® LS390 provides longer seal life and tighter sealing which improves productivity and process optimization as well as creating a safer environment in the day-to-day running of a pharmaceutical manufacturing facility.
Sanitary seal applications can often experience problems related to thermal and chemical resistance, compression set (permanent deformation) and high stiction. This can cause intrusion in the production line or dead space which increases the risk of contamination or leakage unless seals are continuously tightened.
Kalrez® LS390 is different. It overcomes these issues with its high hardness properties, low stiction, high temperature resistance (up to 220 °C (428 °F)) and broad chemical resistance (excellent resistance to process chemicals, WFI (water for injection), as well as SIP and/or CIP processes). These properties enable increased MTBR (mean time between repair), facilitate sanitary seal piping disassembly and because of its unique grey colour, Kalrez® LS390 parts are easy to identify for proper material selection and application.
Kalrez® LS390 offers a great performance advantage and makes it the optimal choice for OEMS and Life Science manufacturers.
Kalrez® for Food and Beverage

The food and beverage industry, as a producer of products for consumer consumption, must meet the highest standards of safety and cleanliness.
Due to the nature of the production process, highly reliable and efficient sealing solutions that are resistant to chemicals and temperatures are needed. Kalrez® parts, which are the most chemically resistant elastomers are the ideal solution. They offer longer lasting, resistant and secure seals which also minimize fluid absorption so taste and smells are not carried over between batches of different products.

Kalrez® Applications Include:

  • Homogenizing equipment
  • Stirrers
  • Sterilization processes
  • Seals for filling equipment
  • O-rings and sanitary gaskets
  • Bottling and filling equipment



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