{"product_id":"1u3998-seal-a-fits-caterpillar-models","title":"1U3998 Seal A Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Piston Seal for Caterpillar (Cat) Equipment\u003c\/h3\u003e\u003cp\u003eThis hydraulic piston seal is a direct aftermarket replacement for Caterpillar (Cat) OEM part number 1U3998. It is used in hydraulic cylinder applications to prevent fluid bypass past the piston, maintaining cylinder force and efficiency. The seal is constructed from a PTFE\/NBR composite, a proven combination for heavy-duty hydraulic service offering excellent wear resistance and fluid compatibility.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePart Type: Hydraulic Piston Seal (2-piece)\u003c\/li\u003e\n\u003cli\u003eInner Diameter: 1.880 in.\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 2.250 in.\u003c\/li\u003e\n\u003cli\u003eWidth \/ Height: 0.190 in.\u003c\/li\u003e\n\u003cli\u003eMaterial: PTFE\/NBR composite\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar (Cat):\u003c\/strong\u003e Refer to your machine's model and serial number to confirm cylinder fitment. This seal fits Caterpillar hydraulic cylinders calling for OEM part 1U3998.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e1U3998\u003c\/p\u003e\u003ch4\u003eAftermarket Interchange Numbers\u003c\/h4\u003e\u003cp\u003eCTC-1U3998, CTC-1U3998A\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"Reliable Aftermarket Parts, Inc® -OD","offers":[{"title":"Default Title","offer_id":42452542816339,"sku":"1U3998","price":37.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/1U3998_01.jpg?v=1757673345","url":"https:\/\/www.reliableaftermarketparts.ca\/products\/1u3998-seal-a-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}