Print Format Data Sheet Description Urethane Flex Tube is a very economical solution to prevent water infiltration in cold joints. The Urethane Flex Tube is placed on the cold joint during the construction. The cement particles can not penetrate through the walls of the tube, due to its special permeable membrane, but the Urethane resins will migrate through the membrane into the joint. After the concrete structure is completely cured, the construction joints are injected with Urethane resins through the Urethane Flex Tube Physical Properties Tube Materials PET wire woven around a steel coil Diameter 1/2" (12.50 mm) Weight 0.046 lbs/foot (0.07 kg/m) Porosity 35 micron Storage Store in dry areas using original box. Keep away from water and humidity. Procurable Urethane Flex Tube Kit contains 100 ft (30m) Urethane Flex Tube, 1 box with 100 attachment clips, 10 Flex Tube connectors and 15 feet of clear reinforced PVC hose.