{"product_id":"m-s100-p-or-bi-jis-b90","title":"JIS S100 Buna-N Nitrile (90A) Metric O-Ring, 90A Durometer, 99.5mm ID x 2mm CS (3.917\" x 0.079\", 103.5mm 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 JIS S100 o-ring, a standard metric sealing size measuring 99.5mm inside diameter by 2mm cross-section (3.917\" ID x 0.079\" CS, 103.5mm outer diameter), molded in 90A Buna-N Nitrile rubber.\u003c\/p\u003e\u003cbr\u003e\u003cb\u003eFull Compatibility:\u003c\/b\u003e JIS S100 is an international-standard o-ring size used across pumps, valves, filters, fittings and machinery worldwide. If your application calls for a 99.5mm x 2mm 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":48609887551693,"sku":"M.S100.2.OR.BI.JIS.B90","price":11.99,"currency_code":"USD","in_stock":true},{"title":"5-Pack","offer_id":48609887584461,"sku":"M.S100.5.OR.BI.JIS.B90","price":17.99,"currency_code":"USD","in_stock":true},{"title":"10-Pack","offer_id":48609887617229,"sku":"M.S100.10.OR.BI.JIS.B90","price":25.99,"currency_code":"USD","in_stock":true},{"title":"25-Pack","offer_id":48609887649997,"sku":"M.S100.25.OR.BI.JIS.B90","price":54.99,"currency_code":"USD","in_stock":true},{"title":"50-Pack","offer_id":48609887682765,"sku":"M.S100.50.OR.BI.JIS.B90","price":91.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/8110\/0237\/files\/2026_O-RING_BOX_045_91317523-0057-4056-a726-0b0613adddd5.jpg?v=1785882124","url":"https:\/\/beaverislandparts.com\/products\/m-s100-p-or-bi-jis-b90","provider":"Beaver Island Parts Company","version":"1.0","type":"link"}