Amazon.com: uxcell Nylon Flat Washers M5 10mm OD 5mm ID 1mm Thickness Sealing Gasket for Faucet Pipe Water Hose, Clear, Pack of 50 : Industrial & Scientific
Amazon.com: uxcell M3 x 8mm x 1mm Nylon Flat Insulating Washers Gaskets Spacers Fastener for Faucet Pipe Water Hose Black 100PCS : Industrial & Scientific
Amazon.com: uxcell M3 x 7mm x 0.5mm Black Zinc Plated Flat Washers Gaskets Spacers 300PCS : Industrial & Scientific