Waterproof grease for head rebuild?

Y

yzer

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I'll be rebuilding a Wilcox Crittenden Headmate manual head tomorrow evening. What kind of waterproof grease is recommended for this job? There is general purpose black waterproof grease in the grease gun for engine use.

Specifically, I'm thinking it might be a good idea to lube the pump cylinder walls and piston. Maybe the usual vegetable oil is all I need? There is a Purasan downstream.
 
It would be best to stay away from petroleum-based greases. I suggest a Teflon-based waterproof marine grease, tradenamed Super-Lube or Sea Lube. You can sometimes find it at NAPA auto parts stores, under the tradename Super-Lube. It comes in a small tube, and is a gel, about the consistency of toothpaste. Super-Lube also makes an aerosol spray - don't get that for a head; you need something thicker in consistency.

I looked on BoatFix but couldn't find it.
 
Thanks a lot Vic! This head model went out of production this winter so I want the rebuild to last as long as possible.
 
No go at the auto parts. I also went to Ace Hardware during the lunch hour and found some Ace Silicone Grease 1/2 oz. It was in the plumbing section right next to the faucet washers and cores. Says it contains no petroleum additives and is recommended as a lubricant for rubber and plastic parts. Should that do it?
 
Silicone probably won't last as long as as a teflon product but I'll give it a try. Thanks again, Vic.
 
superlube is one product that is always on my boat. It has a long list of uses. I use it to lubrimacate thru hull fittings, on water pump impellers, for heads, ball valves, you name it.

Great product. Store it next to the rescue tape and kroil.
 
yzer. the silicone grease should work just fine. I need some for my head rebuild as well. It was standard practice on the sub to lubricate all water system o-rings with silicone grease. Helped keep them pliable and keep a good seal. Also helps keep them in place during reassembly.
 
Look for a good O-ring lube. But you may have to go to an
industrial parts store to find it. We have it offshore, it
is clear and semi-thick, but everything slips great with it.
The one we use is called Parker O-Lube.
 
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