material and sizes: please choose from the following 
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stationary types:
replacementto replace AESSEAL B02 shaft size 20mm,BURGMANN MG1 shaft size 20mm,FLOWSERVE 190 shaft size 20mm,MTU FG1 shaft size 20mm,LATTY T700 shaft size 20mm,ROTEN L3 shaft size 20mm,STERLING SMG1 shaft size 20mm,VULCAN 19 shaft size 20mm,for pump Hecker HN 410SU
Our cetifications :ISO9001:2008,ISO/TS16949:2009,ISO 14001:2004,SGS,ROSH,REACH,FDA,WARS,and so on.