I remember these being available years ago for certain Mopar and GM muscle car transmissions. Unfortunately those ones were notorious for developing leaks. What specific application does your bearing apply to? Very curious to see what results you end up with in the long term. My OEM setup is still only a couple years old and very smooth (plus I'm careful to maintain it) with the only "upgrade" being a stainless steel braided hose, but it'd be nice if you've just figured out an option for those doing clutch work in the future who end up doing bearings as well.