On Thu, 13 Aug 2009 17:50:28 -0400, "Gary Owens"
wrote:

My mothers walker has 2 Teflon ski's on the rear legs.

As others have mentioned, UHMW would last better than Teflon and is
much less expensive to boot. In fact, I think the originals are more
likely UHMW than Teflon.

Poke the skis with a hot needle or a soldering iron. UHMW will melt
quite easily and give off a waxy odor. Teflon won't budge unless you
get it over at least 500F -- but don't get too aggressive, at higher
temps it decomposes into some toxic gas.

--
Ned Simmons