Review on 🔧 Impresa Products: Pack of 2 Fagor Pressure Cooker Replacement Gaskets - Fits Many 10 inch Fagor Stovetop Models (Check Description for Fit) by Alex Panda

looks like a Fagor O-ring but doesn't fit. As pressure builds, the o-ring will pop out of the rectangular safety notch on the cap. I suspect if the rectangular notch on the cap is a bit smaller then that o-ring can hold the pressure. With the size of a rectangular notch in the lid, the o-ring material just isn't strong enough to withstand the pressure. This is quite difficult, if the material of the o-ring is too strong it can be dangerous because the o-ring itself must also be a safety device: if the pressure is too high it will pop out and release steam. disappointed.