... of high strength and good water resistance nylon canvas 2.long service life,simplified maintenace ., 3wear resistance Because of ISO 9001 ... :2008 rubber dam simple structure, less investment, long using life, convenient operation methods, nowadays rubber dam plays positive ... -100-3Using EPDM, with nylon canvas as a skeleton, two cloth three glue, monolayer thickness of 10 mm L×W=20m ...