S-9888 Metal Safety Fuse for Mirro Cookers & Canners

Easy to install, makes my pressure cooker like new again

Part needed to repair Mirro pressure cooker.

Very happy the 9888 metal safety fuse can be bought! I used a socket wrench to unscrew the old one and threaded the new fuse in place. Highly recommend this product and seller, it's a definite 10/10. Puts my mind at ease to upgrade the original leaded overpressure plug to a modern silicone replacement.

Very pleased with the fit and also is easy to install after I had my 4 qt canner seal - very old model - blow out.

If you have an older Micromatic pressure cooker trying to replace this S-9888 Metal Safety Fuse with ruin your pressure cooker. Here is why. I have a 16-quart Micromatic pressure cooker that had not been used for a very long time, so I decided to replace the S-9888 Metal Safety Fuse in the top. I used a 9/16 wrench to remove the old Safety fuse. Then I attempted to screw in the new one by hand and it would never start correctly. The treads would not start and kept getting cross threaded in the aluminum top of the pressure cooker. There are no gaskets around this fuse. the threads are steel and trying to screw to aluminum is a design flaw to get a seal. That why the new pressure cookers made with aluminum, the safety fuses are self-sealing push in type and are not treaded steel. It is almost impossible to unscrew a safety fuse seated in aluminum and thread a new one in the soft aluminum metal top without cross threading because when you remove the old one the thread in the soft aluminum cuts the threads and the new one is not going back in and sealing.So don't attempt to replace this safety fuse. Just leave it. Even the old one you just took out can no longer be screwed back in the soft aluminum and create a seal. Using a tap and die to attempt to repair the cross threads in this aluminum top will just make it worse. So, forget trying to replace this safety fuse if you have the old-style screw in type and just be careful to watch your pressure cooker then using it.

Purchased to replace safety valve. Used criteria displayed to make selection of product but new valve would not fit. Returned. Fast refund.

Very easy to replace and works wonderfully