{"product_id":"m-a0038-p-or-bi-iso-b90","title":"ISO 3601 A0038 Buna-N Nitrile (90A) Metric O-Ring, 90A Durometer, 3.75mm ID x 1.8mm CS (0.148\" x 0.071\", 7.35mm 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 A0038 o-ring, a standard metric sealing size measuring 3.75mm inside diameter by 1.8mm cross-section (0.148\" ID x 0.071\" CS, 7.35mm outer diameter), molded in 90A Buna-N Nitrile rubber.\u003c\/p\u003e\u003cbr\u003e\u003cb\u003eFull Compatibility:\u003c\/b\u003e ISO 3601 A0038 is an international-standard o-ring size used across pumps, valves, filters, fittings and machinery worldwide. If your application calls for a 3.75mm 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":"25-Pack","offer_id":48609578582221,"sku":"M.A0038.25.OR.BI.ISO.B90","price":15.99,"currency_code":"USD","in_stock":true},{"title":"50-Pack","offer_id":48609578614989,"sku":"M.A0038.50.OR.BI.ISO.B90","price":21.99,"currency_code":"USD","in_stock":true},{"title":"100-Pack","offer_id":48609578647757,"sku":"M.A0038.100.OR.BI.ISO.B90","price":32.99,"currency_code":"USD","in_stock":true},{"title":"250-Pack","offer_id":48609578680525,"sku":"M.A0038.250.OR.BI.ISO.B90","price":72.99,"currency_code":"USD","in_stock":true},{"title":"500-Pack","offer_id":48609578713293,"sku":"M.A0038.500.OR.BI.ISO.B90","price":138.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/8110\/0237\/files\/AS568-007_a1450e53-41f0-42a2-9a32-683d412f2ddb.png?v=1785878656","url":"https:\/\/beaverislandparts.com\/products\/m-a0038-p-or-bi-iso-b90","provider":"Beaver Island Parts Company","version":"1.0","type":"link"}