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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 wher 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 |
| 7000-017 | 7000L,7040L | ETFE Rotor Seal |
| 7010-071 | 7010, 7010-087, 7000, 7040 | ETFE Rotor Seal |
| 7030-015 | 7030, 9030 | ETFE Rotor Seal |
| 7060-074 | 7060, 7066, 9060 | ETFE Rotor Seal |
| 7060-067 | 7060L | ETFE Rotor Seal |
| 7125-079 | 7125, 7125-081, 7725 | ETFE Rotor Seal |
| 7410-075 | 7410 | ETFE Rotor Seal |
| 8125-097 | 8125 | ETFE Rotor Seal |
| 9010-051 | 9010 | ETFE Rotor Seal |
| 9125-082 | 9125，9725 | ETFE Rotor Seal |
| 3030-005 | 3030，3030-038 | PEEK Rotor Seal |
| 3710-008 | 3000, 3000-038, 3710, 3710-038 | PEEK Rotor Seal |
| 3725-018 | 3725, 3725-038 | PEEK Rotor Seal |
| 9010-065 | 7000, 7010, 9010 | PEEK Rotor Seal |
| 8125-119 | 8125 | PEEK Rotor Seal |
| 9125-095 | 7125, 7725, 9125, 9725 | PEEK Rotor Seal |
3725i手动进样阀（大容量阀）转子密封圈 3725-018