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Author Topic: sealing tar inside my cooler after tank removal  (Read 906 times)
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chris in Bama
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« on: July 13, 2017, 08:38:44 PM »

Can someone tell me about this "sealing" tar that is on the inside of my Westinghouse cooler? (along many joints & seams of the body)  My questions are;
1. what was it for?
2. before media blasting, what needs to be removed (some of it, all of it?)
3. Does anything need to go back in it's place?
Thanks
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Slapshot42
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Jared


« Reply #1 on: July 14, 2017, 08:05:41 AM »

The tar was essentially a sealant for the tank liner .  When preparing the machine for sandblasting I use a sharp putty knife and remove as much as possible.  During reassembling I use an automotive seam sealer .
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Zach
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« Reply #2 on: July 14, 2017, 09:34:04 AM »

3M or the Dynatron seam sealer work great, most auto parts stores have it. Somewhat expensive stuff but if you store it correctly it will last.
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Ltransam
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« Reply #3 on: July 14, 2017, 01:22:38 PM »



I found scraping as much off as possible then a Good Citrus cleaner will dissolve the rest
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chris in Bama
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« Reply #4 on: July 14, 2017, 06:12:38 PM »

thanks to all that replied, i found in another related thread (i hadn't seen), the use of DX330 to remove the tar. I picked up a quart today, got as much off as i can with a putty knife. will try this solvent tomorrow. how about covering the seams with air duct tape?
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Slapshot42
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Jared


« Reply #5 on: July 14, 2017, 09:52:12 PM »

thanks to all that replied, i found in another related thread (i hadn't seen), the use of DX330 to remove the tar. I picked up a quart today, got as much off as i can with a putty knife. will try this solvent tomorrow. how about covering the seams with air duct tape?

I think the tape would not be as durable long term.  A tube of seam sealer shouldn't break the bank!
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