Posted by Janicholson on May 15, 2023 at 16:59:21 from (24.240.46.228):
In Reply to: Re: engine valve seals posted by onetotaltoolman on May 15, 2023 at 13:42:40:
It acts like a partial umbrella. oil running down the retainer and keepers are redirected a way some. Umbrella oil control devices look similar but actually look like a small mushroom cap. positive valve seals (used on all cars/trucks now) are teflon rings moving within a rubber seal that allows only a metered quantity to get to the stem. Look up: PC valve stem seals. Jim
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