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Old 12-18-2011, 06:39 PM   #1
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Default How many MLTs leak?

I just did the 10gall Rubbermaid conversion found on these pages. I now know I overtightened. When I searched "over tighten" while adjusting, I only found posts saying their results were tight and unmoving. So, I tightened. Later, when I searched more closely I found lots of posts about not over tightening.

In any case, I'm now afraid to un-do my work for fear I've damaged the rubber insert that comes with the cooler. (My outside washers are actually cutting a bit into the plastic of the cooler - that's how tight it is). Leakage is maybe a teaspoon an hour filled full cold or hot. For now, I'm going to use it and see if it's a problem before I try to fix anything and find it's worse.

I wonder if I'm alone in these results? From searching, it appears most folks were wiser than I and avoided this. But anyone out there working with a little leaking? Or tips on fixing damage from overtightening? (Something I may search out after I try my first batch this week).


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Old 12-18-2011, 06:42 PM   #2
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Mine leaks the tiniest amount, probably the same. Your teaspoon an hour. I fiddled with it trying lose and tight and after several adjustments and disassemblies (once making the problem worse when I forgot to put a gasket back in.. Fortunately I was just testing with nothing but water that time), I've decided to just live with it. It's probably a bad gasket or maybe an issue with a washer, but I'm not losing enough to be concerned and the mash temp has held just fine.


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Old 12-18-2011, 06:55 PM   #3
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Yep, nature of the beast, I'm afraid. Most coolers have textured plastic walls and It's really difficult to make a perfect seal against a textured, bumpy surface like that.
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Old 12-18-2011, 08:22 PM   #4
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Thank you, it's good to not be alone in the world! Can't wait to try it out and see if I can raise my efficiency with better temperature control.
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Old 12-18-2011, 08:33 PM   #5
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I used this on mine...not a drop of sweet wort lost.

DAP Products - Silicone Sealants - DAP® Household/Aquarium Adhesive Sealant
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Old 12-18-2011, 08:37 PM   #6
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I think you are using a different cooler than I have, but FWIW, I don't use any bulk head fittings at all. Just a plain old rubber stopper inserted from the inside of the cooler (so that water pressure holds it in place instead of popping it out). Not one drop of leakage in 3 years of use. Simple, cheap and effective. Here's a couple pics of my set-up. Just something to consider.
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Old 12-18-2011, 08:46 PM   #7
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None of mine do.

Here is one,



Nothing but a fitting snugged tight to the original seal. That idiotic washer some put in there just gives you another place to seal up.
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Old 12-18-2011, 10:43 PM   #8
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BBL_brewer, what size is that stopper? That's exactly how I want to do mine!!
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Old 12-19-2011, 12:04 AM   #9
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Quote:
Originally Posted by Butter View Post
BBL_brewer, what size is that stopper? That's exactly how I want to do mine!!
It's a #3. I just took my cooler to the LHBS with me and matched up a stopper to it. I somehow doubt that all cooler drain holes are the same diameter, so you might want to do the same. Or if you have to order them get one a bit smaller and one a bit bigger just in case. Stoppers are cheap.
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Old 12-19-2011, 12:46 AM   #10
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Mine leaks on occasion bit not very much. The mash temp is maintained and I still hit my numbers fairly consistently. I wouldn't worry about it.


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