{"product_id":"m-1043-57-p-or-bi-bs45-v70","title":"BS 4518 1043-57 FKM Fluorocarbon Metric O-Ring, 70A Durometer, 104.3mm ID x 5.7mm CS (4.106\" x 0.224\", 115.7mm 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 1043-57 o-ring, a standard metric sealing size measuring 104.3mm inside diameter by 5.7mm cross-section (4.106\" ID x 0.224\" CS, 115.7mm outer diameter), molded in 70A Fluorocarbon (FKM) rubber.\u003c\/p\u003e\u003cbr\u003e\u003cb\u003eFull Compatibility:\u003c\/b\u003e BS 4518 1043-57 is an international-standard o-ring size used across pumps, valves, filters, fittings and machinery worldwide. If your application calls for a 104.3mm x 5.7mm 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":"2-Pack","offer_id":48609966686413,"sku":"M.1043-57.2.OR.BI.BS45.V70","price":16.99,"currency_code":"USD","in_stock":true},{"title":"5-Pack","offer_id":48609966719181,"sku":"M.1043-57.5.OR.BI.BS45.V70","price":28.99,"currency_code":"USD","in_stock":true},{"title":"10-Pack","offer_id":48609966751949,"sku":"M.1043-57.10.OR.BI.BS45.V70","price":45.99,"currency_code":"USD","in_stock":true},{"title":"25-Pack","offer_id":48609966784717,"sku":"M.1043-57.25.OR.BI.BS45.V70","price":103.99,"currency_code":"USD","in_stock":true},{"title":"50-Pack","offer_id":48609966817485,"sku":"M.1043-57.50.OR.BI.BS45.V70","price":175.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/8110\/0237\/files\/AS568-346_0c4290a0-2ae7-4880-ac90-ce82eeaddc83.png?v=1785883001","url":"https:\/\/beaverislandparts.com\/products\/m-1043-57-p-or-bi-bs45-v70","provider":"Beaver Island Parts Company","version":"1.0","type":"link"}