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Kerr Self Sealing Mason Jar. If the jar of food is not processed the degree of vacuum is influenced by the temperature of the. Kerr Company manufacture the Kerr Economy Fruit Jars also the Kerr Self Sealing Mason Jars the only fruit jars in the world that seal without a rubber ring. Another of their patents is the wide mouth jar. This vacuum is produced by packing boiling food into the jar and sealing the jar immediately or by heating the food in the jar.
Easily pour dry ingredients. Kerr who founded the Hermetic Fruit Jar Company that year. A stylish and eco-friendly water jar. KERR SELF SEALING MASON JAR 23 - Great Condition. Kerr 0505 Regular Mason Jar Quart. Sign up to discover your next favorite restaurant recipe or cookbook in the largest community of knowledgeable food enthusiasts.
Kerr Mason Caps Self Sealing Brand seal by vacuum which forms during the cooling of the contents of the jar.
KERR SELF SEALING MASON JAR 8 - Great Condition. Self Sealing was first trademarked by Kerr in 1934 but the term was first used by Kerr as far back as 1904. Storing dry goods in your pantry. They take standard size mason jar lids and ring bands. San Francisco man Julius Landsberger patented metal lids fastened onto a composition gasket. Another of their patents is the wide mouth jar.