Looking for Old National No. 7 Pressure Canner Gaskets and Parts in 2021? Scroll down this page and follow the links. And if you bring home some fruit or vegetables and want to can, freeze, make jam, salsa or pickles, see this page for simple, reliable, illustrated canning, freezing or preserving directions. There are plenty of other related resources, click on the resources dropdown above.
If you have a Old National No. 7 Pressure Canner, and are looking for replacement gaskets, gauges, weights (jiggler), etc, here's good news; Reviewers on the big selling website whose name begins with Amaz (they say we can't say their name...) say that these gaskets and gauges fit the Old National No. 7: pressure canner - pressure cooker
National Presto Industries, Inc. was founded in 1905 in Eau Claire, Wisconsin under the name "Northwestern Steel and Iron Works", making pressure canners (called “canner retorts” back then) for commercial canneries. These were 50-gallon and later 30-gallon pressure canners. The company installed an aluminum foundry in 1915 for the specific purpose of manufacturing large-size (1900 gallon) pressure canners for home use.
They produced the No. 7 cooker/canner starting in 1917. In 1925 the company name changed to National Pressure Cooker Company. And then the company changed names again and became Presto in 1939. The “Presto” Pressure Cooker was introduced at the 1939 New York World's Fair. I
So if the canner says "Old National" on it, you know it is older than 1940.
The good news is, they were very well built and you may just need to replace the
Of course, you may need need to replace handles and other parts too. And have the pressure gauge tested or simply replace it.
If you have more questions, you can contact the Presto company here .
Presto® pressure cookers and canners were redesigned and re-engineered in 1978. They added new features including an interlock system that prevented the cover from being opened while there was pressure in the unit.
1917 - 1939 - National and Old National
1939 - 1978 - Presto
1978 - Presto, with redesigned models - See this page for a master list of Presto model numbers, sizes and replacement
And click here for free downloads of Presto and other pressure canner's instruction manuals!
Lids: The national no 7 lids are interchangeable with the presto 21B lid.
Identifying the serial number: Look on the sides of the canner; The number on the bottom of the canner is NOT typically the serial number.
Click here to download the Old National Pressure Canner Manual
Feel free to download the manual for personal use, and to link to this page, but do not copy the manual and post it on other websites
The Presto Pressure
canners are out
of stock, but Tfal's
Above is the
2020 version of
the Ball Blue Book