Hi,
So the proposed finalized fix, is because the of the tolerance of rubber rings, we have to change up the design.
Instead of having a design which goes around the rings, I'm currently working on one that goes in the housing. This will achieve the same silencing result, without the nuance of ring installation.
My current timeline is to finalize the design and have samples by end of April ~
edit:
This is because applying the adhesive to such a thin piece is not possible due to the the thinness. We've tried a few manufacturing methods, but none yielded a satisfactory result.