The structures of 103,104,105,109,110,111 models are earliest standard abode by to produce, spread and apply seals in china. These seals have been widly installed in the seal cavities of all types of rotary pumps. Among them, 103,104,105 models are unbalandced internal-installation with internal flow and are suitable to the media with internal flow and are suitable to comparatively high pressure----2.5MPa at maximum.

Operating limits:
Sealing media: medium or below corrosive water or oil.
Temperature: -20℃－+150℃
Pressure: 0－0.8MPa
Speed: ≤20m/sec