Review on Fel Pro VS 50785 Valve Gasket by Carl Mayes

So this gasket fits into the slot in the cover that holds the gasket in place. That fits well. However, it didn't fit perfectly. It appears to be a rubber based material. This makes it flexible. However, I did have to squeeze it a bit at one point to get it into the slot. Since it's rubber based, I managed to do it without much effort. The small risk is that the compressive force can cause the seal to pop out like a spring when you put the cap back on. It didn't happen to me, but you get the idea. All in all a good product so far.