Pressure cooker and canner photos and tips from our customers.
Valuable for fellow Americans replacing the same parts and preserving
our historical heritage. Will you share yours? It's practical
"knowledge to do" you pass on.
replacement parts properly fit, they should be ordered according to
the cooker or canner's model number, regularly stamped into the cooker
body, or the part number from the manufacturer instruction manual.
If the numbers are too worn and hard to read try making a pencil scratching
over the area on white paper.
You will generally find most models stamped right into the middle
on the bottom of the pressure pot. You may also see a date (slightly
to the left) on the bottom of the pot. The date will appear as a
fraction (see figure a).
Presto: some models
(the newer, the more likely to) have their number stamped onto the
side of the cooker or canner (see figure b). It could also be etched
into the bottom or just underneath the handle. Old models will have
a label that will be attached to the top of the cover. Older units
have model numbers such as 603, 204, 50, 40, etc.
Most Presto cookers and canners will
have a 409a stamped into the bottom of the pot (in the center).
This is not the model number. 409a notes that this Presto pressure
canner or cooker was built and meets the listed Underwriters
Laboratory (UL) standards for safe household pressure cooking and
canning (These requirements cover household-type cooking utensils
known as pressure cookers or pressure sauce pans which operate at
a nominal pressure of 15 psi (103 kPa) or less. They are intended
for use over gas- or electric-top burners of residential type cooking
All American Canners and
Cookers: The model number is printed on the top of the
pot. The last two numbers on the bottom of the pot generally indicate
the model. (fig. d)
All American Sterilizers:
The model number on electric units appears above the heat
control knob (fig e).
A Rubber Gasket fits into the cover
of a pressure canner or cooker to create a secure pressurized
seal during cooking. Over time heat exposure can contribute to
the sealing ring deformation and shrinkage (and on presto cookers,
the automatic air vent may become hard and deformed). When this
happens, replace both the sealing ring and automatic air vent.
(Mirro and All American do not feature an automatic air vent).
Anytime you order any of the presto sealing rings, you will receive
the automatic air vent in the box.
Sealing rings are manufactured
to arrive up to 1" too large to be resilient to normal
gasket in warm water for 10 minutes before installing it can
Turn Cover upside down and remove the old ring. Scrub the
sealing ring groove in the lid thoroughly with a bush to
eliminate all foreign matter. Lay the new ring loosely on
the inside of the cover and insert a small section into
the sealing ring groove.
As you pick up the next section
of ring, push it toward the portion just inserted, while
at the same time pressing it firmly into the groove. The
sealing ring must be squeezed together section by section
as you insert the made slightly oversized ring. Work your
fingers all the way around the inside edge of the sealing
ring to be sure it is fully in place.
When putting the cover on
the body, press one hand down on the area opposite the handle
to help compress the ring. If necessary, to help make the
cover easier to open and close, a very light coating of
cooking oil may be applied to the underside of the body
Handle canner and
cooker lid gaskets carefully and clean them according to manufacturer
directions. Nicked or dried gaskets will allow steam leaks during
After each use, remove the gasket and wash it in warm, soapy water.
Rinse, dry, and replace the gasket in the lid. Gaskets on older models
may require a light coating of veggie oil once per year. Gaskets on
newer models come pre lubricated and do not need oiling.
Be sure the petcock, vents and weights
are clean. Cool your pressure cooker and canner according to your
model instruction manual and the recipe's directions. Take off removable
weights (and petcocks for the older models) and wash and dry them
Yes you can exchange the toggle
switch with the new vent tube and regulator and it will work just
like the new ones. I do recommend however that you purchase the instruction
booklet because they do work a little differently. Click here to find the parts that you are going to need
to make the exchange. Order an instruction booklet. All American no
longer manufactures Canners and Cookers with petcocks.
Of course, you can use your pressure
cooker/canner model number to find correct over pressure plug. It
may also be helpful to know that the over-pressure-plugs that fits
your pressure cooker or canner is one of the three variations made
and available to you. You can very easily determine if you need the
metal safety fuse (below left). Simply inspect the lid's underside
and if there is a hexagon or stop-sign-like plug that screws into
the lid, you need the 9888 metal safety fuse. Safety fuse color may
differ from original. The other options, rubber-only over pressure
plugs, pop into the lid (below right). The rubber from your old pressure
plug may have become hard should be removed and replaced.
Over pressure plugs from under lid.
6-sided metal screw-in (left) and pop-in rubber (right). Safety
fuse color may differ from original.
Pressure gaskets differ not
only in diameter but also in thickness and rubber shape. Due to
the volume of gaskets with the same diameter, varying by millimeters
we're sorry we cannot properly fit gaskets from measurements.
To order your replacement gasket, we'll need your model number.
or the actual gasket that needs to be replaced. If
you cannot see the model number, you can mail us your old
gasket (or part) to our office in
Pressure Cooker Outlet
1035 Sylvatus Highway
Hillsville, VA 24343
This is one example of how difficult
proper gasket selection can be without searching by your pressure
cooker or canner model number. The diameters of 3440 and 9882 are
equal. The 3440 is about a millimeter thicker on the outside and has
a differently shaped inside. Although both gaskets may fit into your
lid, a gasket too small will leak around the sides while a gasket
too big won't allow a lid to close.
Thickness comparison of sealing rubber gasket 9882 (shown on the
top) and rubber sealing ring gasket 3440 (bottom).
your cooker-specific model number page lists different parts than
your model, those parts have likely been updated. Many older Mirro
pressure canners and cookers were manufactured using vent tube B.
Check out this mirro model number M-035 with the discontinued vent
pipe and regulator. For some Mirro models (like the M-0536 pictured
below) when replacing the old regulator ( the vent tube must also
be replaced and vice versa.
Mirro Model M-0536-11 with discontinued
regulator and vent pipe (left and center). The model number and
liquid capacity are stamped onto the bottom (right)
There should be a slight leakage under the pressure regulator
when cooking is started, do not be alarmed. This is usually due
to condensation formed because the temperature of the pressure
regulator is lower than the rest of the cooker. This condensation
will disappear as the cooking progresses.
Another possibility is the vent tube is loose, in which case
it can be tightened with a crescent wrench. Care should be taken
not to not to nick the upper surface of the vent pipe.
After considerable time, the vent pipe may become worn and should
When first beginning to cook it is normal for moisture to form
on the cover and between the handles.
Leakage between the cover and the body is typically due to shrinkage
of the sealing ring after a prolonged period of use. If this condition
develops, both the sealing ring and automatic air vent (on presto)
should be replaced. Be sure the groove the sealing ring fits into
is clean and free of all foreign matter.
If the leakage persists after a new sealing ring is in place,
it may mean the rim body or cover flange has been damaged. In
this case, the complete cooker should be serviced.
A slight amount of leakage around
the automatic air vent is a normal operating condition. The automatic
air vent acts as a valve and will completely seal the cooker. Continued
leakage may mean that foreign matter has collected among the edges
of the automatic air vent. This may be corrected by removing and washing
the automatic air vent with hot soapy water.
CAUTION: Whenever you see excessive leakage from the cooker,
remove it from heat immediately. Reduce pressure completely. Remove
pressure regulator from vent pipe.