Copper metal washer set - sealing rings, gaskets - flat washers with box - assortment of 200 pieces for sealing - sizes M5 M6 M8 M10 M12 M14.

About this item. O-rings are easy to use and install. The smooth surface of the copper washer reduces friction between fasteners, prevents leaks, provides insulation, and prevents loosening or pressure loss. Widely used, O-rings are perfect for drain plugs for water, oil, fuel, and plumbing. The hydraulic seal kit is ideal for electrical connections in household equipment, appliances, automobiles, and marine applications. Washers are truly practical tools.