A while back I tripped accross a product line of linear bearings/slides made entirely from plastic. And now I can't find them for the life of Google or Bing... Does this sound familiar to anyone?

These were marketed as a lower precision, lower capacity product. They were a two-part system - rail and carriage. They were also suggested for usage in food products manufacturing. I was thinking these were a product from one of the main providors of this type of stuff (Parker, Thomson, Bishop-Wisecarver) but sure can't find it now.

Thanks, Daen