These work great! I have a bathroom exhaust fan damper that was making noise when it gets windy outside which, in Milwaukee, is all. The. TIME. Slapped a couple of these on the damper and BAM - no more noise! If you do the same, I recommend doing it on a windy day and adding these one at a time to ensure that you don't add too much weight.For other uses, I'm sure these will work well.