{"product_id":"m-1641-84-p-or-bi-bs45-b90","title":"BS 4518 1641-84 Buna-N Nitrile (90A) Metric O-Ring, 90A Durometer, 164.1mm ID x 8.4mm CS (6.461\" x 0.331\", 180.9mm OD) - Precision-Molded Replacement Sealing Ring for Pumps, Valves \u0026 Fittings","description":"\u003cp\u003eChasing a leak or a slow drip and need the exact metric o-ring size to seal it for good? A worn or wrong-size o-ring lets fluid weep past the joint, drops pressure, and can damage the equipment around it.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis Beaver Island Parts Company replacement o-ring is a single BS 4518 1641-84 o-ring, a standard metric sealing size measuring 164.1mm inside diameter by 8.4mm cross-section (6.461\" ID x 0.331\" CS, 180.9mm outer diameter), molded in 90A Buna-N Nitrile rubber.\u003c\/p\u003e\u003cbr\u003e\u003cb\u003eFull Compatibility:\u003c\/b\u003e BS 4518 1641-84 is an international-standard o-ring size used across pumps, valves, filters, fittings and machinery worldwide. If your application calls for a 164.1mm x 8.4mm o-ring, this is the size.\u003cbr\u003e\u003cb\u003eInstallation Note:\u003c\/b\u003e Clean the groove, inspect the sealing surface, seat the new o-ring without twisting it, and lubricate before assembly.\u003cbr\u003e\u003cb\u003ePro Tip:\u003c\/b\u003e Apply \u003ca href=\"https:\/\/beaverislandparts.com\/products\/aqua-flex-food-grade-silicone-lubricant-50g\" target=\"_blank\" rel=\"noopener\"\u003eAqua Flex\u003c\/a\u003e lubricant before installation to ease seating and extend seal life.\u003cbr\u003e\u003cp\u003eWe are an American family-owned and operated small business committed to high-quality replacement parts and honest fitment information.\u003c\/p\u003e","brand":"Beaver Island Parts Company","offers":[{"title":"1 (Single)","offer_id":48609991196877,"sku":"M.1641-84.1.OR.BI.BS45.B90","price":10.99,"currency_code":"USD","in_stock":true},{"title":"5-Pack","offer_id":48609991229645,"sku":"M.1641-84.5.OR.BI.BS45.B90","price":26.99,"currency_code":"USD","in_stock":true},{"title":"10-Pack","offer_id":48609991262413,"sku":"M.1641-84.10.OR.BI.BS45.B90","price":41.99,"currency_code":"USD","in_stock":true},{"title":"25-Pack","offer_id":48609991295181,"sku":"M.1641-84.25.OR.BI.BS45.B90","price":94.99,"currency_code":"USD","in_stock":true},{"title":"50-Pack","offer_id":48609991327949,"sku":"M.1641-84.50.OR.BI.BS45.B90","price":160.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/8110\/0237\/files\/AS568-439_07516038-e07e-4e6b-9f68-a9d95b7e08ba.png?v=1785883256","url":"https:\/\/beaverislandparts.com\/products\/m-1641-84-p-or-bi-bs45-b90","provider":"Beaver Island Parts Company","version":"1.0","type":"link"}