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Black Butyl Rubber Caulk


Mastercraft

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I was sliding around under the coach to put in my new hydraulic lines for a 6 point leveling system mod I am doing and noticed some opportunities to seal the belly material better around various openings and on the edges.

 

Is CRL Black 777 Butyl Rubber Sealant the stuff to use?

 

thanks

Rich

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That could work well. A lot depends upon where the opening is and how large it is. In some cases I like to use one of the expanding foam products, but if you do so use care to allow enough space for the foam's expansion. I would not use any silicone based caulking as silicone products do seal well, but once cured nothing will stick to them, not even more silicone so they must be removed 100% before making any repairs to the area.

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