Weck jar Weck jar A Weck jar is a molded glass jar used in canning to preserve food. It is popularly used for jam preservation, for its minimal look and foolproof rubber gasket with a glass lid. Weck jars were created by the J. WECK Company in Germany, who began selling them in 1895. They were initially sold in Germany and began selling outside of Germany in 1902. It soon became the most popular home canning system in Germany and Europe. This system uses glass jars (200 ml–1.5 l), reusable rubber seals, and glass lids. During the canning process the lids are
Fowler's Vacola while still hot (and presumably sterile), the lids are secured by metal tension clips which are removed once cooled and a vacuum seal has formed. Other equipment marketed by the company included a large electrically heated waterbath and "sterilizing thermometer", a glass thermometer mounted on a concave stainless steel backing, graduated in both degrees Celsius and Fahrenheit. Fowler's Vacola products are still produced by the original Fowlers Vacola company, and are available from some hardware stores, and directly from the company via their online store. Used equipment is frequently sold on online auction sites and in opportunity shops. Fowlers Vacola