“3M Bumpon” is what you’re looking for. I think they’re a bit bigger, approx 19mm diameter 9-10mm depth. Note they are not all made of the same material but the correct ones have excellent vibration isolation. I think the ones you’re looking for might be SJ5017?

There used to be a guy sold them on eBay, he had beautiful handwriting! I still have the envelope that arrived with my spares inside. But that was years ago. As said they sometimes just go soft and gooey and need replacement, lighter-fluid was a good cleaning agent to left the old adhesive and sticky block off the piece of kit, and then easily replaced. Meridian used these for years, the old 200 series kit certainly had them.

Best wishes

Richard

Last edited by Richard W; 2026-06-16 12:54. Reason: Clarify not all Bumpon are vibration isolating
Main system; 861v8 ID41, DSP8000SEU fronts with DSP5500 centre and DSP7000 rears (all in lovely silver) 504, HD621
Second system 861v4 ID40 LPS, G98DH, 504, HD621, 2x DSP5200 with DSP5200 centre
MD600 tucked away in study. Lots of other Meridian!