Aquarium safe silicon grease??? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 06-09-2008, 07:20 PM Thread Starter
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Question Aquarium safe silicon grease???

I read on here somewhere that silicon grease was safe for aquarium use.

Is this true?

What kind of silicon grease and where do I get it? The only thing I have found locally was a silicon spray lubricant, but it contained petroleum distilates, which is a no-no (can you say 'oil spill'?).

I did find some 'dielectric grease' in an auto parts store, which I beleive is silicon based, but the package did not list the ingredients so I did not buy it.

What I want to do is lubricate PVC threads. When test fitting the PVC I find that it goes part way and then gets stuck before it is tight enough to be water tight. Would it be ok to do this AND use teflon tape at the same time, or is the teflon by itself sufficient.

Jim
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post #2 of 6 (permalink) Old 06-09-2008, 09:44 PM
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Just use cooking oil. Very little will go along way. Put a small amount on your finger tip and rub it around. It shouldn't bother the teflon tape, but I don't think I've ever tried it. I just use vicegrips, channelocks, adjustable wrenches and more muscle!


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post #3 of 6 (permalink) Old 06-11-2008, 12:48 AM
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Pipe threads are tapered so when you thread the male into the female, the threads actually deform to provide the seal. Teflon tape actually provides some lubrication properties as well as mechanical sealing. Pipe fittings don't really like to be disassembled repeatedly. You could always put a union in so your fittings will line up the way you need them too.

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post #4 of 6 (permalink) Old 06-11-2008, 03:21 PM Thread Starter
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Actually, Google answered part of my question.

'Dielectric grease' is Silicone grease. It is actually used to lubricate O-rings.

There is definetly a difference in the ease of assembly using teflon tape compared to bare PVC.

Wouldn't vegetable oil 'spoil' after a while?
[edit] Sorry, I meant cooking oil.

Jim
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post #5 of 6 (permalink) Old 06-11-2008, 03:51 PM
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Quote:
Originally Posted by jbolinger View Post
Wouldn't vegetable oil 'spoil' after a while?
[edit] Sorry, I meant cooking oil.

Jim
It shouldn't matter--the object is to use very little. It wouldn't take much at all. I've used cooking oil on other stuff, but I don't think I've use it on pvc/teflon. It should really be a non-issue.....


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post #6 of 6 (permalink) Old 06-15-2008, 07:48 AM
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anything considered to be food safe is pretty much aquarium safe. (within reason)

a little vegatable oil is just fine. dont worry about it spoiling either.......

btw, if any comes in contact with the water it will only float to the surface dont be afraid to use it, it cannot harm anything.

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