You used to be able to get latex based foam that would last a long
time. It wasn't as pliable as the polyurethane, so you'd have to
die-cut it.

GregS wrote:
In article , Mike Berger wrote:

The remedy is to use much better foam. Polyurethane foam
isn't intended to last a long time.



I would say most intenders intend it to last. but have been
bitten including speaker companies. Better, as in
lasting longer? I have not really seen any other common soft pliable
foam.