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Old 03-09-2020, 04:33 PM
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Gash Gash is offline
 
Join Date: Aug 2009
Location: Goodyear, Arizona
Posts: 985
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I really like the Permatex Ultra Black. I've used it for gap sealing lots of high heat areas. One tip that could be useful for you: If you dip your finger in water (or spit on your finger), you can smooth the Ultra Black into a nice even fillet. This doesn't make my gap seals any better; it just satisfies my inner OCD.
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