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Rheodyne PEEK Rotor Seal for 3725/3725i - 3725-018

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PEEK Rotor Seal for 3725(i)/038

Product Number: 3710-008

This PEEK Rotor Seal is a polymeric disc that ensures a high pressure seal against the stator. Manufactured from biocompatible PEEK it is inert to almost all organic solvents. It is for valve models 3725(i) and 3725(i)-038. Rotor seals are a common wear part for valves.

The rotor seal is the polymeric disc that makes a high pressure seal against the stator or stator face seal. The seal wears with use and is one of the only parts that may need routine replacement.

Stators are available in 316 stainless steel, PEEK™ and proprietary materials. Stators need replacement only if the ports or sealing surfaces become damaged. Avoid damage from use of improper injection needles by referring to the "Using Proper Syringe Needles" Application Note.

Please Note: Rotor seals for MX Series II™ Modules are available in RheBuild® Kits. Stators for MX Series II Modules are available on this page. MX (Series I) Module rotor seals are available in RheBuild Kits.


  • Model: 3725-018
  • Manufactured by: Rheodyne