Installation Instructions:
1. Remove the old sealing ring and the automatic air vent or old style overpressure plug. CAUTION: To insure safe operation and satisfactory performance from your pressure canner, replace the automatic air vent every time you replace the sealing ring, or sooner if it becomes hard or inflexible.
2. Clean the sealing ring groove and the air vent opening thoroughly. Be sure they are free of all food particles and foreign material.
3. Wash the new sealing ring and automatic air vent in warm soapy water, rinse and dry. Install the sealing ring by working it into the cover a small section at a time until it is fully in place. Any excess amount of sealing ring can be worked into the cover in this manner.
4. 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 lugs and sealing ring.
5. Install the automatic air vent. Turn the cover upside down and push the automatic air vent into the opening from the inside of the cover. The small end of the plunger should be pointing downward as you insert the automatic air vent into the opening. IMPORTANT: The automatic air vent must be fully seated in the opening. The top lip of the automatic air vent should be on the top of the cover and the bottom lip should be against the underside of the cover.
6. When putting the cover on the body, press one hand down on the area opposite the handle. This will help compress the sealing ring and make the cover easy to lock in place. Then, open and close the cover several times to make it operate more freely.