[Equipment] N30i / P30i pillow attachment fail

[glomph]

I bought new pillows for my headgear - and discovered when I pulled out the old pillow unit, that the clear hard-plastic flattened-oval rings which belong to the headgear just stayed attached to the old pillow.  Of course no click-snap is possible now!    What holds those stiff acrylic-plastic rings to the main silicone tubular body of the headset?    Any way to fix this?  I doubt cyanoacrylate (superglue) will work.  No evidence of old adhesive anywhere that held the hard rings in place.    The headgear's in fine shape except for that - is this planned obsolescence?

[note: I googled & searched here for this problem before posting this]

thanks,
Dr G

Photo of the relevant attachment parts:
   

[Nightynite]

It looks like the lip of the headgear holds the plastic oval ring in place. I would think you could just wiggle it back into the headgear end.

[glomph]

of course I tried that...   the thin silicone lip is no match for the force required.   Pulls right out.