COATINGS FOR METAL COMPONENTS OF CONTAINER

摘要

A coated component for use in a pump or valve. The coated component may be a metal spring and/or metal ball. Also provided is a container fitted with a pump or valve having such a coated metal spring and/or metal ball for use with a composition that includes a metal ion sensitive ingredient. The spring and/or ball exterior surface is provided with a continuous and durable coating of a polymeric material effective to reduce interaction of metal ions, the metal spring and/or ball, with the ingredient. The coating on the spring is also preferably flexible.