I have a Rev-a-shelf trash can in my kitchen. This gets extreme use and abuse.  Over the course of 1.5 years the slow close mechanism stopped working and the drawer would not stay closed.  I looked online for replacement parts, a new slide and after a while gave up.  Eventually, I took apart the whole slide to repair the slide and found a small what looks like nylon part was the culprit.  The part has some annoying geometry to model but I got something close enough that works for me.  I actually ended up sla printing mine with a tough resin as I was concerned about layer adhesion long term but this model should work.  You could probably print it out of whatever you want.  I prototyped in PETG-CF but if trying to use I would recommend PA or PC.