1.Non standard o rings all can be made here 2.NBR, EPDM, FKM, ... Different material has different performance, we can manufacture at customers's requirementsCertificationISO/TS16949:2009,ISO9001:2000,QS9000:1998,ISO14001:2004Factory historymore ... center, can develop most kinds of high tech required molds.O ring, rubber ring, seal Rubber Products Manufacturer Molded Rubber Seal ...