141 pieces Flat Washers, Seal Ring Seal, O-Ring Hydraulic Seal Kit Assortment Rubber Washer Different Size for Tap: Amazon.com: Industrial & Scientific
Amazon.com : Captain O-Ring - Power Pressure Washer O-Rings for 3/8" Quick Coupler, High Temperature Viton FKM (10 Pack) [1/2" o-Rings to fit 3/8" QC Fittings] : Patio, Lawn & Garden