Metric Copper Sealing Washers DIN4603 A Metric copper sealing washers to DIN 4603A, suitable for use with metric bolts, screws, plugs and threaded fittings where a soft sealing washer is required. These solid copper washers are designed to compress between mating surfaces to help create a seal... £0.49 (Inc. VAT) £0.41 (Ex. VAT) Choose Options Compare