Value Collection - O-Ring: 3/4″ ID x 1″ OD, 1/8″ Thick, Dash 210, EPR - 43762202 - MSC Industrial Supply
Amazon.com: 30 Pieces Replacement O-Rings Sealing Ring and Garden Hose Washers for 3/8 inch Quick Connector 3/4 inch Standard Garden Hose : Patio, Lawn & Garden
210 Buna-N O-Ring, 70A Durometer, Black, 3/4" ID, 1" OD, 1/8" Width (Pack of 100): O Ring Seals: Amazon.com: Industrial & Scientific
O-Ring for Big Blue & Clear Housing 20" or 10" with input 3/4", 1", 1.5" (housing sold separately)