Instruction: Answer the given question using the supporting document.

Input:
Question: Need sealing ring for model 40
Document: I use my cooker everyday and I'm glad that I didn't have to go searching for a sealing ring when it needed to be replaced. Its good to have amazon's dependable and convenient service for things I need most.PS: I wasn't sure about the sealing ring's model number so I called presto with your cooker's model number and they helped me. Just to be sure that I don't order an incorrect part.
We have a  6 qt. Presto pressure cooker that needs a new sealing ring. The ring arrived in a week or so, but it was the wront size. We could not find the model number on this very old cooker, so when it said 4 to 6 Qt. we assumed the ring would fit both, but not so. We should have done more research.
Sadly, this new sealing ring for my OLD (34 yrs old!) Presto 4 qt. pressure cooker doesn't fit. It's too big. Even though the model (it was 01 PA-4)I have was listed on the front of the box, it doesn't fit in the cover. This is the 2nd ring I purchased for my pressure cooker, and I have no choice but to get a new pressure cooker. The overpressure plug works!
Screw the consumer as often and as shamelessly as possible! It's only "our" hard earned money.1) 2 presto Pressure cooker sealing rings 4&6 quart: Only 4 quart in packages and they did not fit my 4 quart model!2)Best Buy: Panasonic telephone answering, copy and fax office machine: Panasonic KXPF 205...does not take messages,only sends faxes!3) Panasonic HHR P104 for KXTG2336 telephone: batteries direct
The description was right on target. This pressure seal fit perfectly for my listed model (Presto 4qt, 1301001) and it's every bit as good (or even better) than the original. Pressure cooker works great with the ring in place. It's like I have a new pot.
I bought this as a backup to the one I already have ( just in case Presto discontinues selling it - which would mean buying a whole new pressure cooker). I have a pressure cooker model # 0136203 (found stamped on the outside of the cooker just below the handle. The design of this ring is slightly different than my original ring. I tested both the ring and the plug at full pressure and they worked perfectly.
The sealing ring is doing the job it was designed to do. It should perform for some time as expected.
I have only used the sealing ring so far. It is doing what it is supposed to do No complaints
I bought this replacement sealing ring to have on hand because I'm sure in the future I will be needing it.
The sealing ring for our pressure cooker was a perfect fit. We have used it numerous times now and it works great. Paul
Answer: I would recommend contacting Presto directly to find out if it will fit with your current model. They have made many changes over the years.