Help naming an ikelite replacement part.
I have an ikelite housing for the canon 300d. I somehow lost one (on my last dive trip) of the black cups that fit over the steel buttons on the inside of the housing. The black part that actually touches the buttons of the camera.
Tiny little buggers, but one fell off 
Just wondering is there a Ikelite part number for these ? or should i just bring another one to my local hardware store to see if they have anything similar ? Would hate to pay 20 euro or something like that for shipping of it 
Hope you understand which part i mean.
Cheerz
Tank
