Originally Posted by
Papa Tom
My assumption is that it would have to be a tight fit and would have to be further secured with some hairspray or adhesive. But, hmmm, how would that effect the chemical composition of the foam
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If you choose the right adhesive the foam will be OK.
However, unless you choose an adhesive that's so resilient that you won't be able to get it off without chemical and/or mechanical assistance, it could let go at some really inopportune time in the future after it's gone through all kinds of temperature and stress cycles. I would definitely not trust hairspray or common adhesives. Note that if you do use such a resilient adhesive, you might not be so happy about the decision when you eventually have to replace the grips anyway.
I would definitely not use regular pipe insulation -- it's not going to be nearly tough enough.