Combined Materials:
Stationary Ring (Cast Iron/Steel)
 Rotary Ring (Carbon)
 Secondary Seal (NBR/Chlorinated Rubber)
 Spring and Punched Parts (65Mn/Iron)
Working Conditions:
Mediums: Refregerating fluids, freon, 
 water oil, etc.
 Temperature: -20oC~80oC
 Pressure: =0.8Mpa
 Speed: = 10m/Sec