50PC/lot Rubber Ring Black NBR Sealing O Ring OD7/8/9/10/11/12/13/14/15/16/17/18/19/20*2.5mm O-Ring Seal Oil Ring Gaskets .-.

50PC/lot Rubber Ring Black NBR Sealing O Ring OD7/8/9/10/11/12/13/14/15/16/17/18/19/20*2.5mm O-Ring Seal Oil Ring Gaskets .-.

Aliexpress UK