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QiiMii metal face seal (QCR) fittings can be used as a high purity components in high vacuum or high pres...
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A. Silicon or FPM seal
B. Connection end: Weld, Clamp, Male, Nut&Liner or Flange
C. Manual pull handle with two or four positions
D. Multi positioning handle in material stainless steel or plastic
E. Control TOP for control and indication
F. Install with inductive proximity switches
| Feature | EPDM | NBR | FKM | Silicon | PTFE |
|
Working Temperature Range |
-48〜135℃ -55〜275℉ |
-40〜120℃ -40〜248℉ |
-29〜204℃ -20〜400℉ |
-62〜232℃ -80〜450℉ |
-40〜232℃ -40〜450℉ |
|
Acid Resistance |
Excellnet | Good | Good | Good | Excellnet |
|
Alkali Resistance |
Excellnet | Good | Good | Bad | Excellnet |
| Petrol-Resistance | Bad | Excellnet | Excellnet | Good | Excellnet |
| Diesel-Resistance | Good | Good | Excellnet | Good | Excellnet |
| Tear Resistance | Excellnet | Good | Good | Excellnet | Excellnet |
| Bearing Capacity | Normal | Good | Excellnet | Excellnet | Excellnet |
Butterfly valve seal performance diagram for different materials
Medium resistance-volume change rate %
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