Biopharma Process Seals


We are your source for O-rings, gaskets and custom seals that are stable in harsh environments and resistant to heat 

DuPont has a 40-year track record of innovation and development for O-rings, gaskets and custom seals that stand up to the most challenging operating environments.

DuPont™ Kalrez® seals provide time-tested reliability for biopharmaceutical processing applications. 

Aside from its cleanliness and purity, Kalrez® polymer chains are engineered to be one of the most inert polymer structures available, standing up to more than 1,800 different chemicals while offering high-temperature stability.

Kalrez® parts are manufactured to the highest quality standards. Every part has documented traceability and these parts provide one of the longest, most predictable lifespans in the industry.

The long-term, proven performance of Kalrez® can mean less frequent seal changes, repairs and inspections, increasing process and equipment uptime for greater productivity and yield.  

Kalrez® offers: 

• Excellent thermal capability versus other elastomers

• Excellent chemical compatibility

• Low corrosion


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