About 3 hours to render down one sheet to all these bands, not all
sliced down as can do to required thickness when required. Went out and
bought another sheet , as a seasonal product, and the idea worked so well.
http://diverse.4mg.com/silicone_bands_easter.jpg
The blow hole plug plus cylinders shown , with one stretched over a
pinch wheel.
As long as the increased diameter does not rub on the carrier, AFAIR
always enough clearance. So those plus standard O Orings , one or 3
layed in periphery for pulley tyres(flat edges are not required for
tyres in tape decks), completes the universal rubber tool kit.
Plus remnants in pic. minimum I've "bean sliced" down to without
breaking is about 0.3mm thick.