These blue lower unit drain drain plug gaskets are OEM-quality fiber washers designed for marine use and provide a good, tight seal.
Compatible with most Mercury/Maruner outboards and all mercruiser models:
Mercury Marine 12-19183 & 12-191832 12-191833
Mallory Marine 9-60101 & 9-60102
Sierra Marine 18-2945 & 18-2244
SEI Marine 98-102-09
OBR Red Rhino MR-103
GLM 31170.
Note: Not compatible with the Japanese model.