{"product_id":"1u1770-ring-backup-fits-caterpillar-models","title":"1U1770 Ring Backup Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Backup Ring for Caterpillar (Cat) Equipment\u003c\/h3\u003e\u003cp\u003eThis backup ring (part number 1U-1770) is a hydraulic sealing component used in Caterpillar construction and industrial equipment. Backup rings are installed alongside primary O-rings to prevent seal extrusion in high-pressure hydraulic systems, protecting the sealing assembly from pressure surges and extending overall service life. This ring measures 256.40mm (approximately 10.09 in.) internal diameter.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eInternal Diameter: 256.40mm (approx. 10.09 in.)\u003c\/li\u003e\n\u003cli\u003eType: Backup Ring (anti-extrusion ring)\u003c\/li\u003e\n\u003cli\u003eApplication: Hydraulic sealing systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar:\u003c\/strong\u003e Verify specific model compatibility using your machine serial number. Contact us with your model and serial number for fitment confirmation.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e1U1770, 1U-1770\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":42453760442451,"sku":"1U1770","price":39.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/1U1770_01.jpg?v=1757877559","url":"https:\/\/www.reliableaftermarketparts.com\/en-au\/products\/1u1770-ring-backup-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}