Looking for a source of vibration dampening sheets


I want to experiment with some chassis vibration dampening. I tried a search here but it didn't turn up much. I'm looking for a source of good quality vibration dampening sheets for my CDP and preamp. What do I look for and where is it available? Thanks for your help.
mijknarf
Thanks everyone, you guys gave me a good start. I'll scope out the options you provided.
I don't think this will do what you want, but it is so inexpensive, you ought to look at it. At the local hardware store, you can buy sorbathane peforated mats, which go in your kitchen drawers and cabinents to keep things from sliding around. They are very flexible and come in rolls and are very inexpensive.

Stack them up, layer by layer, to kill any vibration you want to kill. Cheap and works great.

The only catch is, they aren't adhesive, so if you want to keep your chassis from vibrating, it won't do the job.
Partsexpress.com has great selection and sizes, and they are speaker and home audio based sheets for the actual purpose, used in many hi-end components, they also carry dynamat with the metal backing that I found very good as well, but you could just go to best buy and get that, it is all very cheap from parts express however at about 1.50 10" X 10" sheet.
The reason for asking this question to begin with was because I can feel cabinet vibrations along with the music in my CDP and preamp when I place my hand (palm) on top of the components. I figured dampening sheets would help this. Then, I remembered I had three isolation cones in a spare drawer. Sunday, just for the heck of it I placed them beneath my CDP. Like I said above, before the isolation cones, I could put my hand on the top of my CDP and feel the vibration of the sheet metal with the beat of the music. After I put the cones on the CDP, it was greatly reduced, say, 90%. I'm wondering if the coupling I'm getting from the cones is all I need? Regarding the sound, I can say I never associated my component vibrations with sound, but I knew the vibration in my CDP couldn't be a good thing. After the cones were put beneath my CDP, the vibration is tremendously reduced, but not like a night/day difference. I want to say my system sounds more focussed, but I'm not sure if its because I want it to or because it actually is. Any thoughts?
Hi
A little late I arrive, but dont forget to check ear ted dampening sheet. It comes with an adhesive side and you can cut it and damp whatever you want. I used also to damp some of the capacitors of my amps. You can find this in percyaudio.com
Alan