Review on Presto Pressure Cooker Sealing Automatic by Janie Dennis

I recently bought a very used 4 Quarter cast aluminum Presto pressure cooker (#40) at a flea market. Surprisingly, even though the O-ring was very old, brittle and cracked, it was still building pressure. There was also an old style push cork in the lid. I decided to replace the o-ring, which included a new type of auto-bleed with a small metal pin in the center that pops out when the pressure is increased. I ordered part number 09909 although I wasn't 100% sure it was the right one. It took me a while to get the old, hard, brittle ring out of the slot in the lid. When I first put a new o-ring in the groove, I had an extra o-ring. I thought maybe it's wrong. I took it out, poured some water on it and put it in the groove, after that it fit perfectly. The automatic vent also worked. Very happy with the product.