This Arctic Hayes O Ring Selection Box contains 18 different universal metric O-Ring sizes. These nitrile rings resist heat, most petroleum and silicone fluids, hydraulic and non-aromatic fuels and solvents. Supplied in a PVC case and contains the following:

20 of each size: 3 x 1mm, 4 x 1mm, 5 x 2mm, 6 x 2mm, 6 x 2.5mm, 6 x 3mm, 7 x 2mm & 8 x 2mm

5 of each size: 9 x 2mm, 10 x 2mm, 12 x 3mm, 13 x 3mm, 14 x 2.5mm, 17 x 2.5mm, 18 x 4mm, 20 x 2mm & 22 x 2mm