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
Inflator Hose O-Ring NBR 70 7.5 x 1.5, Pack of 10 – Scuba Clinic Tools
X1 Tools Square O-Ring (ID:13 mm, CS:1.5 mm, OD:16 mm), 2PK X1E-CON-ORI-RSQ-M-1.5-13-16x2 | Zoro
Model 71629 Small Internal O-Ring for 1.0, 1.5 and 2.0 HP Pumps – Hydrotools Parts