Acorn Engineering - 0.437" ID x 5/8" OD Dash 111 Buna-N O-Ring - 69568749 - MSC Industrial Supply
Viton FKM O-Ring size 111 Green, Brown, Black
Replacement Seals o-Ring for Mixer Hansgrohe 98186000 | eBay
Othmro 10Pcs White Flat Silicone O-Rings Sealing Rings, 26x32x3mm(IDxODxTHK) Round O-Ring for Faucet Shower Head Washers Garden Hose O Rings Hot Water Pipe Seals Replace for Mechanical Sealing: Amazon.com: Industrial & Scientific