These are the little seals that go on the bobbin pin in the Shadow accumulator control valve.  This part lists for over $40 ea. from the usual suspects - just because they can.

This seal requires installation tool BTW077 available under the "Tools" tab.

This seal is also included in the ACV rebuild kit available on this page.

SY Accumulator Control Valve Bobbin Seals UE36874

SKU: BTW118
$5.00Price