rubber joint,flexible rubber joint,expansion joint competitive price,high quality,Prompt delivery,flexible MOQ,nonstandard OEM rubber joint,flexible rubber joint,expansion jointWe manufacture varieties of expansion ... ) Flange standard: ANS1150, or DIN, or UNI. 2) Rubber: EPDM / NBR Rubber. 3) Pressure: PN6. PN10, PN16, ANSI150. 4) Burst ... , water, sea water, weak acidoil, alk aline, etc. rubber joint