C.O.
Mama:
Good morning!! I am wondering if the furniture pads or stops that go under beds would work for you?
I know this isn't exact...but you get what I'm saying, right? Put these over the wheels - still have the height and not the problem?
http://www.ebay.com/itm/Chair-or-Sofa-Leg-Sleeves-Floor-P...
here's something else.
http://www.ebay.com/itm/8-Furniture-Sliders-Gliders-Easy-...
this may be the closest - see the 3rd square down.
http://www.oodlesofpartsplus.com/scartchguard-protectors.htm
http://www.ebay.com/itm/Black-Table-Chair-Leg-Foot-Covers...