KVSP™ Kalrez Valve Stem Packing
DuPont™ Kalrez® Valve Stem Packing (KVSP™), is a combination of chemically-resistant DuPont™ Kalrez® perfluoroelastomer (FFKM) parts and DuPont™ Vespel® V-rings that can reduce stem-based fugitive emissions and improve process control throughout the lifespan of the valve.