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By certification 
AS-R3N,
Conical spring design.
Operating Limits:
Temperature:-20——180
Speed: 15m/s.
Pressure: 10bar.
Standard size: 10-80mm.
The Common Materials:
Seal ring: Car, Sic, Ssic, TC.
Secondary seal:NBR,EPDM,Viton etc.
Spring and metal parts:304,316.,HAST.C
Conical spring design.
Operating Limits:
Temperature:-20——180
Speed: 15m/s.
Pressure: 10bar.
Standard size: 10-80mm.
The Common Materials:
Seal ring: Car, Sic, Ssic, TC.
Secondary seal:NBR,EPDM,Viton etc.
Spring and metal parts:304,316.,HAST.C