FAWC ( for anyone who cares )

I sent an email to Groco and received a return from 'John Cly' at Groco. He helped me out quite a bit but unfortunately has no rubber left for my size seacock. ( they have a few for other sizes )

Anyway, he gave me some suggestions on places to find the repair part and gave me the part numbers but couldn't help. Anyone who has them is suggested to lube them as Ron suggested. I didn't know how to lube it and now I do.

Anyone who has those seacocks can find information on Groco's website (groco.net). From the main page click on 'service manual' and then the photo of seacocks and finally the series of the seacock (the ones with the rubber are SV series)

So the answer is nada!. No replacement parts from Groco. The company that made the insert for Groco no longer exists and they destroyed the mould.