uxcell Fluorine Rubber O-Rings, 4mm OD 1mm ID 1.5mm Width FKM Seal Gasket for Machinery Plumbing, Green, Pack of 20: Amazon.com: Industrial & Scientific
34X1 Oring 34mm ID X 1mm CS VMQ Silicone O ring O-ring Sealing Rubber
Silicone O Ring 1 mm thickness White (x10) Ø8mm - Audiophonics