Amazon.co.jp: O-Ring CS2.62mm EPDM O RING ID 15.54 / 17.12 / 18.72 / 20.29 x 2.62mm O-Ring Gasket Seal Exhaust Rubber Mount Insulation Tag Locket 100PCS Logic and Gasket (Size : ID18.72
O-Rings EPDM Rubber 1.5mm Cross Section O Ring Seals Washer Gasket OD 4mm-100mm | eBay