Features: Our 225piece O Rings Assortment Kit provide selection of rubber washers in 18size, perfect for quick repairs and maintenance tasks. These assorted o rings crafted outstanding rubber material with good air tightness and highly temperature resistance, which is oil resistant, heat resistant, wear resistant for long lastings use. Soft and flexible rubber seal o rings, just clip it on, easy to use. Rubber o-rings can prevent metal-to-metal contact thereby protecting wiring, cable running through firewalls, metal panel, and so on. These rubber o-rings washers is packed in a divideds and labeleds storage box, you can save your efforts to find and choose the size, which is convenient for your storage and picking. Wide Applications: Widely used as sealing rings and washers for the connectors of hydraulic machines, pipelines, etc. Suitable for plumbing, auto repair, garage, workshop, automobile, door, window, appliances, pulley, etc. You will receive a total of 225pieces of rubber o-rings in 18 commonly used size, the sufficient quantity is enough to meet your long-terms use and meet a variety of tasks. The hydraulic seal is delicate, fine and rigorously functional. Specifications: Material:Rubber 1pack includes 3x1mm 20pcs,4x1mm 20pc,4.5x2mm 20pc,5×2mm 20pc,6X2mm 20pc, 6×2.5mm 20pc, 6x3mm 20pc,7x2mm 20pc, 8x2mm 20pc,9x2 5mm 5pc,10×2mm 5pc,11x2mm 5pc,13×3mm 5pc,14×2.5mm 5pc,17×2.5mm 5pc,18x4mm 5pc, 20×2mm 5pc, 22x2mm 5pc, Package Includes: 20pc 3x1mm 20pc 4x1mm 20pc 4.5x2mm 20pc 5×2mm 20pc 6X2mm 20pc 6×2.5mm 20pc 6x3mm 20pc 7x2mm 20pc 8x2mm 5pc 9x2mm 5pc 10×2mm 5pc 11x2mm 5pc 13×3mm 5pc 14×2.5mm 5pc 17×2.5mm 5pc 18x4mm 5pc 20×2mm 5pc 22x2mm note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.