... be constructed on the wet base surface,especially adapting to the waterproof of rainy areas.3. excellent Cohesiveness. ... lavatory and pool, dam, sewage treatment plant,Classification1. according to shape: ring tape, F, T,U,L E tape2 ... . according to materil: EPDM , neoprene, natural rubber, PVC, steel plateect ... section is in the elastomer elasticity water stop for construction