{"product_id":"m-a0400-p-or-bi-iso-b90","title":"ISO 3601 A0400 Buna-N Nitrile (90A) Metric O-Ring, 90A Durometer, 40mm ID x 1.8mm CS (1.575\" x 0.071\", 43.6mm 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 ISO 3601 A0400 o-ring, a standard metric sealing size measuring 40mm inside diameter by 1.8mm cross-section (1.575\" ID x 0.071\" CS, 43.6mm outer diameter), molded in 90A Buna-N Nitrile rubber.\u003c\/p\u003e\u003cbr\u003e\u003cb\u003eFull Compatibility:\u003c\/b\u003e ISO 3601 A0400 is an international-standard o-ring size used across pumps, valves, filters, fittings and machinery worldwide. If your application calls for a 40mm x 1.8mm 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":"5-Pack","offer_id":48609602240717,"sku":"M.A0400.5.OR.BI.ISO.B90","price":9.99,"currency_code":"USD","in_stock":true},{"title":"10-Pack","offer_id":48609602273485,"sku":"M.A0400.10.OR.BI.ISO.B90","price":12.99,"currency_code":"USD","in_stock":true},{"title":"25-Pack","offer_id":48609602306253,"sku":"M.A0400.25.OR.BI.ISO.B90","price":21.99,"currency_code":"USD","in_stock":true},{"title":"50-Pack","offer_id":48609602339021,"sku":"M.A0400.50.OR.BI.ISO.B90","price":33.99,"currency_code":"USD","in_stock":true},{"title":"100-Pack","offer_id":48609602371789,"sku":"M.A0400.100.OR.BI.ISO.B90","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/8110\/0237\/files\/AS568-030_f4811ab7-1d57-4d39-9160-a1e9d60a1097.png?v=1785878927","url":"https:\/\/beaverislandparts.com\/products\/m-a0400-p-or-bi-iso-b90","provider":"Beaver Island Parts Company","version":"1.0","type":"link"}