Sterling Seal XP70BUN012X100 012 Quad Ring, Buna NBR, 70 D (Pack of 100): Amazon.com: Industrial & Scientific
Amazon.com: Karcher 6.362-151.0 O-Ring D. 10 X 2 Nbr 70 : Tools & Home Improvement
O Rings Buna N 70 Rubber gasekt CS =2.4 mm Metric sizes ORing Nitrile (NBR) 70 ID x CS mm|rubber o-ring|rubber oringcs g - AliExpress
Sterling Seal ORBN010x1000 Number-010 Standard O-Ring, Buna Nitrile Rubber, 70 Durometer Hardness, 1/4" ID, 3/8" OD (Pack of 1000): Amazon.com: Tools & Home Improvement