Sink is stock and works great (last time I used it). I don't re-call exactly what I used for the teak, it was a couple years ago. I removed all the hardware, sanded it right down to the wood ending with a fine grit sand paper. Then put multiple coats (4 - 5 on everything) of whatever type of marine varnish it was... lightly sanding and using a tack cloth in between each coat. Turned out great. The swim platform could use a good sanding and another coat though due to the sun exposure.