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  #1  
Old 12-21-2009, 01:45 PM
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Default J B Weld vs. Pro-Seal

Can someone extol the virtues of Pro-Seal vs. J B Weld? I am repairing some small plastic parts (not sealing fuel tanks). What exactly is J B Weld?
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  #2  
Old 12-21-2009, 01:52 PM
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It is an epoxy based with powdered metal fillers. It dries hard so it is good for repairs where you need to fill a void and can be sanded, tapped, etc. But its very poor for anything flexable like plastic, it will just break away or crack. Proseal is more of a flexable, fuel resistant sealant. While it does act like an adhesive, its bond strenght is pretty low compared to a real adhesive. For your application, something rated for the type of plastic you are repairing will be better than either proseal or JBweld.
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  #3  
Old 12-21-2009, 02:36 PM
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Smile Try this stuff...

...which is available (or a very close equivalent) at Home Depot...

http://paint-and-supplies.hardwarest...xy-108771.aspx

It's different since it will bond to ABS which most epoxies won't do.

It does have a short working time though....
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  #4  
Old 12-21-2009, 02:40 PM
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...or you could try Marine-Tex.

It is a 2 part structural compound that is designed for plastics... primarily fiberglass boats.

CJ
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  #5  
Old 02-13-2010, 04:09 PM
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my vote is for marine-tex. been using it for too many years to admit. can be mixed to be flexible or rock hard.
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  #6  
Old 02-14-2010, 07:27 AM
rv72004 rv72004 is offline
 
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As the marine environment is one of the toughest out there, I second most marine products [glues, fillers, sealers etc] to be good for aviation.
Have had good results with the marine products.
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