What is this black gasket
See the black gasket in the attached picture. It was found inside the C-drive oil reservoir. At first glance I thought it was the gasket for the top, but obviously not. It is too large.
I think I have seen this gasket before.
Any help would be appreciated.
CW Bill Rouse
Amel Owners Yacht School - www.AmelOwnersYachtSchool.com
720 Winnie St
Galveston Island, TX 77550