kalrez® spectrum™ 7275 double seal life in chlorine dioxide service-j9九游会老哥论坛

chlorine dioxide is a strong oxidizing gas that finds many uses as bleaching agent and disinfectant, being a more effective and safer biocide than other sources of chlorine. most of the production of chlorine dioxide is used at paper mills for pulp bleaching.

a north american based paper mill had to perform frequent repairs in a pump handling chlorine dioxide in water. according to the reliability engineer, the incumbent non-black ffkm typically failed within 5 months of installation because of the extremely aggressive nature of the stream. with replacement of the seals by kalrez^® 7275, the pump seal life was extended to more than 12 months, removing the pump from the “bad actors” list and into a regular yearly maintenance.

kalrez^® spectrum^™ 7275, a specialty non-black perfluoroelastomer product, is made with a dupont patented crosslinking system, and is suggested for seal applications where high resistance to oxidizing and reactive media is required.