(optional feature); Silicone Rubber O-ring Size: Available in all 'AS568A-' standard sizes (001-475); Available in all 'AS568A-' boss gasket sizes (901- and up) O-Rings.com by Boyd Corporation is an ...

Flexible filament like TPU is one option, but [NagyBig] designed a simple bracelet to ask: how about embedding rubber bands or o-rings into the print itself? Embedding objects into prints usually ...