... specification PVC material for water stop 280-7, 290-8, 300-8, 2. water stop Tensile strength 12Mpa 3. Expansion water stop Chengdu RenFeng ... build the production of pvc water-stop, which is made of PVC resin, plasticizer, stabilizer raw material, mastication, granulation, extrusion ... friendly materials, and good sealing effect. Plastic water stop used when pouring concrete at construction joints and ...