RBB/ RBC Flange O-Rings
Replacement O-Rings for V1 and V2 RBB/ RBC upper water neck flanges and/ or anything fabricated using those flanges. You can either purchase a Dash 133 (large) and a Dash 118 (small) locally or from me here.
NOTE: If you are going to look for your own, make sure the material is compatible with Ethylene Glycol.
Dash 118
Dash 133