I havent looked at the inner one on mine (#11) , maybe afraid to... Out of sight, out of mind?!?! The outer ones are perfect at least..
Where would you even get such a thing when Sennheiser can't even supply us the pads or outer foam?
PS as I've said before I don't know why they've abandoned their enthusiasts. Especially as this is primarily a professional head that has not been adequately replaced. Profit I suppose but they weren't always like thid. Customer loyalty founded on a belief that a manufacturer does care about their customers matters in the long run. Long rant over... For now
(Listening as I type on a newly arrived pair of Sennheiser IE80S BT (brilliant by the way) earphones as I type this, mind!!!
)