OPTI-SEAL pump seals are made from an inert, ultra-high molecular weight polyethylene material (UHMW-PE). Relative to conventional polytetrafluoroethylene (PTFE) seals, these seals show less particle shedding. This reduces the potential for clogged frits, resulting in the prevention of unscheduled system downtime. These seals are recommended for typical reversed phase mobile phases (aqueous to moderate levels of organic). They are not recommended for long-term use with highly organic mobile phases, such as typical normal phase solvents.
