Show New Rubber Rii Rings gs Only for lor Canning Home Food Rubber rings for home canning food tood In glass Jars must b be purchased new each year says the United States Department Department Department De De- De- De of Agriculture It Is s being penny wise and pound foolish to use the same rubber rings twice and jars of spoiled Instead of ot sweet canned foods toads may be the result of such f false lse economy The rubber ring is Im all to the tight air seal in a glass Jar The best new rubber rings therefore therefore there there- fore lore are none none too good for home can can- ning The high temperature of of processing processing processing proc proc- essing Is hard on them and to withstand withstand with with- stand It t they must be of good quality The simplest test Is to double the rings together and press the fold told with the finger The rubber should not crack under this treatment |