ITEM NAME:225pcs Rubber O-Ring Washer Seals Watertightness Assortment Different Size #gib Product Description Description: Features: Rubber structure can resist oil, gas, water and alcohol solvents. Nitrile butadiene rubber (NBR), heat-resistant, wear-resistant, oil-resistant and ultraviolet performance excellent: commercial nitrile butadiene rubber (NBR) 18 different sizes. Used for personal and professional workshop, garage and pipeline services. Dimensions range from 3mm x 1mm (fuselage) to 22mm x 2mm (fuselage). Including plastic storage tanks. Specifications: Purpose: Suitable for pipeline, hydraulic, air and gas connection to prevent leakage Specification: 20pcs 3 x 1mm 20pcs 4 x 1mm 20pcs 4.5 x 2mm 20pcs 5 x 2mm 20pcs 6 x 2mm 20pcs 6 x 2.5mm 20pcs 6x 3mm 20pcs 7 x 2mm 20pcs 8 x 2mm 5pcs 9 x 2mm 5pcs 10x 2mm 5pcs 12 x 3mm 5pcs 13 x 3mm 5pcs 14 x 2.5mm 5pcs 17 x 2.5mm 5pcs 18 x 4mm 5pcs 20 x 2mm 5pcs 22 x 2mm Material: NBR Packaging size: 200*100*20mm/7.87*3.94*0.79" Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3mm measuring deviation due to manual measurement. Included: 225pcs X O-Rings.Included: 225pcs X O-Rings. Rubber structure can resist oil, gas, water and alcohol solvents. Including plastic storage tanks. Suitable for pipeline, hydraulic, air and gas connection to prevent leakage.