... 3, ISO9001 and CE certificate 4, do OEM limit rubber joint flangedSpecification:1, DN32-DN30002, Flange connection3, standard: Flanged DIN/PN ... , Neoprene/Chloroprene, SBR/Buna-S, Gum Rubber,HNBR, ECO/Epichlorohydrin5, PTFE Lined or Viton Expansion Joints for Chemicals & Solvents6, general presure ...