PHILADELPHIA, June 25 /PRNewswire-FirstCall/ -- Crown Cork & Seal Company, Inc. (NYSE: CCK) today announced that manufacturers of personal care products can now significantly reduce water penetration, decrease product waste, and protect brand integrity with the new Watertight Tube closure, designed by Zeller Plastik, the plastic closures division of Crown Cork & Seal. The enhanced 2" closure increases water resistance under the lid, and between the tube neck and closure body, protecting bath and shower products from dilution.