They used to cost about 10 cents each, but the price took a huge jump recently, so I'm looking for an alternate.
The Motorola part# is a 4382292M01
They are .325” thick, 0.75” round and have a 0.25” hole in the center. They are a non-brittle plastic material (nylon?).
They look just like the one to the right of center of this picture. Does anyone know of a source for something like these? I'm looking for a few hundred. The Motorola ones were gray, but any color is OK.
![Image](http://www.spec-net.com.au/press/0210/images/eci100210_img02.jpg)