Looking for lower unit drain/vent plug gaskets

[Dave1027]

1988 Mercury 100HP
Looking for lower unit drain/vent plug gaskets. I know this motor is old but these should be the most common replacement items needed. Shouldn't be that hard to find. Anybody have a part number for a kit that includes the drain plug gasket and two vent plug gaskets? Thanks

 

[alldodge]

Looks to be item 6 part number 191833

https://www.mercruiserparts.com/bam/subassembly/32127/359/190

 

[roscoe]

oil plug seal, blue fiber washer 12-191833

 

[1960 Starflite]

EBay 12 gaskets $8.99 free shipping

Item No. 334042017654
Sierra P/N
18-2244, 18-2945
Mercury P/N
12-19183, 12-19183-3, 12-20260

 

[airshot]

Ebay and Bass Pro shop. BP was 6.99 for one screw and two gaskets