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Old 07-30-2012
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"Rubberize" base of Propane tank(s)?

Has anyone used an automotive "undercoating" or rubberizing type of product on the base of your propane tanks to prevent rusting and accompanying stains on fiberglass? I've got two 10 pounders in the gas-locker for the galley range and stove and was thinking of putting a 20# on the stern to feed the BBq.

I was at autostore and they have a couple of products from "Dupli-color" to rubberize or undercoat the car. Label says they are rubber, shake can, apply etc etc...

I was thinking of putting 2-3 coats around the base/ring of my propane tanks to stop rusting and put a "soft" layer between the base of the tank and the deck.

I looked for a Rhino brand can but could not find it, might consider that brand based on the thickness I've seen in truck beds.

Thoughts, experience with this?
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Old 07-30-2012
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Re: "Rubberize" base of Propane tank(s)?

Sounds like a good idea, but I think the down side will probably outweigh the benefit.
I think you're going to create a perpetual wet environment for your propane tank's bottoms that is going to increase corrosion - the problem is you wont see it as it will be hidden under that swanky new rubberized coating.

Pete
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Re: "Rubberize" base of Propane tank(s)?

I believe that corrosion protection on cars is done by the paint, then there is a layer of rubberised coating that exists to prevent the paint from physical damage. In other words, the coating won't prevent the metal from rust unless there is a very effective paint layer underneath.

I think the best suggestion I've heard is to apply a layer of epoxy to the bottom of the tank.
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Old 07-31-2012
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Re: "Rubberize" base of Propane tank(s)?

How about putting something disposable on the floor of your tank locker instead? Shelf liner?
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Re: "Rubberize" base of Propane tank(s)?

That sort of underliner is intended for the automotive environment. It is mostly dry, and when not dry is wetted with dirty fresh water. The marine environment is wetter. It is also saltier and therefore more corrosive, unless you are on a lake. I mention these facts because I think the stuff is about as waterproof as gelcoat, which isn't completely waterproof.

Despite not being waterproof, it might work. But it will probably work better if you put it on a new tank so it protects the integrity of the paint, which in turn provides the corrosion protection you seek.
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Re: "Rubberize" base of Propane tank(s)?

Quote:
Originally Posted by afrinus View Post
Sounds like a good idea, but I think the down side will probably outweigh the benefit.
I think you're going to create a perpetual wet environment for your propane tank's bottoms that is going to increase corrosion - the problem is you wont see it as it will be hidden under that swanky new rubberized coating.

Pete
Yes very possible, was going to Naval Jelly and rustoleum first but moisture will be a risk....
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Re: "Rubberize" base of Propane tank(s)?

Quote:
Originally Posted by MarkSF View Post
I believe that corrosion protection on cars is done by the paint, then there is a layer of rubberised coating that exists to prevent the paint from physical damage. In other words, the coating won't prevent the metal from rust unless there is a very effective paint layer underneath.

I think the best suggestion I've heard is to apply a layer of epoxy to the bottom of the tank.
I might try the epoxy, I was hoping for something softer that would provide some friction/sticky to the deck to help keep it secure (along with some tie-down)
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Re: "Rubberize" base of Propane tank(s)?

POR15 will do the job.
Jim
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Re: "Rubberize" base of Propane tank(s)?

Wouldnt the sharp base of the ring wear its way through a coating?
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Re: "Rubberize" base of Propane tank(s)?

FWIW - At home I use a milk crate to keep my spare tank off my deck. Fits like a glove. Before the crate. I had the tank right on the deck, and it wore a nice ring into the wood.
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