This 58-2020 black metal lug twist closure has a vacuum button and a plastisol liner. The vacuum button feature provides the consumer an indication of tampering tamper evidence. Match this cap to a glass jar with a 58-2020 neck finish to package food products including pickles, peppers, and sauces. This product is recommended for hot fill and cool process with a maximum temperature of 185 degrees Farenheit/85 degrees Celsius. We do not recommend using this product for hot water bath processing.