Copper Sealing Washers - 42mm ID x 49mm OD x 2mm. Choose Quantity. Bonded Washers - Imperial. O Rings - 2mm C/S - Nitrile. O Rings - 2mm C/S - Viton. Copper Washers. Bonded Washer Sealing Kits. O Rings - Pressure Washers.
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