{"product_id":"1540738-ring-backup-fits-caterpillar-models","title":"1540738 Ring-Backup Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Backup Ring for Caterpillar (Cat) Excavators\u003c\/h3\u003e\u003cp\u003eThis backup ring (part number 1540738) is a hydraulic sealing component used in high-pressure static and dynamic sealing applications on Caterpillar excavators. Backup rings are installed alongside O-rings in seal grooves to prevent extrusion and deformation under hydraulic pressure, maintaining fluid integrity in hydraulic cylinders, control valves, and pumps. Regular replacement helps extend O-ring life and reduces the risk of hydraulic system failure.\u003c\/p\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Excavators:\u003c\/strong\u003e 320B, 320C, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 322B, 322C, 323D L, 323D LN, 323D SA, 324D, 324D L, 325C, 325C L, 325D, 325D L, 328D LCR, 329D, 329D L\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e1540738\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":42453851078739,"sku":"1540738","price":42.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/1540738_01.jpg?v=1757878763","url":"https:\/\/www.reliableaftermarketparts.com\/en-au\/products\/1540738-ring-backup-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}