I bought a glass-top desk off of Craigslist, and while I’m quite happy with it, I realized when I got home that it was missing 4 of its 6, uhh, clear rubber bumper things. The kind that stick into a hole in the frame and then flange out into a pad, almost like a suction cup, so your glass stays put and doesn’t get scratched. I spent an hour Googling for these every which way, but all I could find were these adhesive-backed bumpers, which are not the right thing at all. I began to question my sanity. How could there not be a single mention of these things on the whole internet?
Eventually, I somehow stumbled across a patio-furniture parts supply company, with a picture that looked promising … and then I was down the rabbit hole. It turns out that the keyword is “30-518″. This is the part number (SKU) for a clear vinyl “1/4-inch stem bumper with 1/2-inch flange” that is sold at more patio furniture supply companies than should fit in one sentence.
To me, the mystery here is that they all use the same part number. Surely this means that they are all ordering from the same catalog or supplier … but I have yet to find any clue as to what that source might be. I feel like I have stumbled across a conspiracy of silence.
In the end I bought 6 bumpers for $0.90 plus $2.75 for shipping from OutdoorPatioSupplies.com.
The (ironic?) thing is that, after all this effort and discovery, the part still isn’t quite a match, although it will work fine. The original bumpers on this table, and to my eye the classic glass-table-top-bumper-thingy, have a 3/4″ flange, not 1/2″. That, as far as I can tell, is impossible to find.
EDIT: For the record … the replacements turned out to be too thin, so that the tabletop rested on a bolt head instead of on the rubber. Duct tape was required. Alas.