All IDEX/Rheodyne valve components are made in the U.S.A

IDEX/Rheodyne Rotor Seals
Rheodyne rotor seals play a vital role to ensure a high pressure seal against the stator. For this reason they require routine replacement for optimal performance of your high-performance liquid chromatography (HPLC) systems. Rotor seals are available in a variety of materials, depending on the pH range of your solutions, including: Vespel, PEEK, ETFE, or Tezfel.
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