{"product_id":"mcmaster-94708a517-galvanized-steel-and-neoprene-bonded-sealing-washer-pack-of-50-for-1-2-screw-size-0-532-id-1-od-0-086-to-0-116-thick","title":"McMaster 94708A517 Galvanized Steel and Neoprene Bonded Sealing Washer, Pack of 50, for 1\/2\" Screw Size, 0.532\" ID, 1\" OD, 0.086\" to 0.116\" Thick","description":"\u003cp\u003eThese washers create a stronger seal than metal or rubber alone to lock air and fluid in, while keeping dust and contaminants out. The flexible rubber layer compresses to fill gaps, while the metal backing stops the washer from squeezing through the hole. These washers are a great solution if you have a hole larger than your fastener that you need to seal. Reuse them a handful of times, as long as the material isn't damaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGalvanized Steel and Neoprene\u003c\/strong\u003e — Combine the strength of steel with the rust resistance of stainless steel. These washers are an economical alternative to 18-8 stainless steel in wet and outdoor environments. 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