evanwebb,

There are many excellent adhesives out there these days, and some are becoming rather specialized so you can probably find just what you are looking with a little research.

For something like plugging a hole you could use most anything, but be careful about specific applications because these products can vary greatly. The adhesive we use for our helmet mounts, for example, looks identical to another formulation that is only 1/3 the strength. Same container, same color, everything.

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Gregg Baker, P.E.
Isaac, LLC
http://www.isaacdirect.com