The Kalrez® product was developed by DUPONT for environments with high temperature and abrasive chemistry where FKM (fluoroelastomer) products can not work. With its many features; Kalrez® works excellent with its static and dynamic oring, diaphragm and gasket types in where using FKM, NBR, EPDM, Silicone, PTFE and other elastomers are not suitable. Kalrez® perfluoroelastomer (FFKM) parts can work with more than 1800 chemical, solvent types. Kalrez® perfluoroelastomer (FFKM) parts can work with more than 1800 chemical and solvent grades. Kalrez® offers exceptional performance in aggressive environments. You can improve the sealing performance of your working system by choosing the right Kalrez® product that is most suitable for acids, amines, solvents, ultrapure de-ionized waters in your working system or for a specific application. Kalrez® products are formulated as different compounds and are prepared to provide the best performance for the chemicals and temperature in your environment. The Kalrez® Application Guide helps users to choose the most suitable product for given temperature and chemical resistance. Kalrez® is a product which makes a difference with the working temperature range - it operates in a very wide working range - 20 ° C / + 327 ° C..