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Yes, but make sure they are small enough to fit inside the springs.
Our machinist screwed up on our last B18 head and installed a different style than he usually does and the springs chewed up the new valve seals.
IMHO, you should only use one style or the other, but not both styles of valve seals at the same time on any valve.
FYI, if you have good valves and guides, the umbrella valve seals work just fine. But I will say that when we have the opportunity, we suggest to our customers to update the valve guides to accept a new style valve seal "that fits under the spring". And when we rebuild an engine, we always update the valve guides and seals.
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Eric Hi Performance Automotive Service (formerly OVO or Old Volvos Only) Torrance, CA 90502
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