Actually, I was thinking of these. They have sealing ridges:
Frank, I think you steered me to these when I was working on my RDE-17 Johnson.
The “O-ring Store” shows quad o-ring kits, but can’t tell if they have ridges.
McMaster-Carr has them. Their #115 is close.
ID is .010 too small, OD is .005 too big.
Maybe it would work for the top crank seal. Bottom is close to the same size as
far as I can tell without destroying the old one, but a little different design
and part # than the top.
Prepare to be boarded!
