The standard rotor seal in many Rheodyne?manual valves is made from a Vespel?blend.This polyimide has low wear and high chemical resistance.Vespel tolerates a pH range of 0 to 10.Solutions more basic than pH 10 dissolve Vespel which damages the rotor seal.If you use any solutions above pH 10，Rheodyne recommends a PEEK blend rotor seal.
PEEK offers a high chemical resistance and versatility，and will tolerate the entire pH range from 0 to 14.ETFE blend rotor seals are appropriate for use in applications where PEEK is not enerally acceptable，such as when methylene chloride or DMSO in higher concentrations is being used.
3725i手动进样阀（大容量阀）转子密封圈3725-018
Part No.For Valve Model No.Description
7000-016 7000L，7040L Vespel Rotor Seal
7010-039 7010，7000，7040 Vespel Rotor Seal
7030-003 7030，9030 Vespel Rotor Seal
7030-014 7030L Vespel Rotor Seal
7060-070 7060，7066 Vespel Rotor Seal
7060-064 7060L Vespel Rotor Seal
7125-047 7125，7725，9725 Vespel Rotor Seal
7410-038 7410 Vespel Rotor Seal
7413-013 7413 Vespel Rotor Seal
8125-038 8125 Vespel Rotor Seal
3725i-038手动进样阀
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