{"product_id":"990173-ring-backup-fits-caterpillar-models","title":"990173 Ring Backup Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Backup Ring for Caterpillar (Cat) Excavators and Cold Planer\u003c\/h3\u003e\u003cp\u003eThis backup ring (part number 990173 \/ 0990173) is a hydraulic sealing component used in the hydraulic track adjuster assembly on Caterpillar (Cat) mini and mid-size excavators and the PM-465 Cold Planer. Backup rings prevent seal extrusion in high-pressure hydraulic applications, protecting O-rings and elastomeric seals from being forced into clearance gaps under pressure surges, extending the life of the overall sealing system in hydraulic cylinders, pumps, and valves.\u003c\/p\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Mini Hydraulic Excavators:\u003c\/strong\u003e 307, 307B, 307C, 307D, 307E, 308C, 308D, 308E, 308E CR, 308E SR, 308E2 CR\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Hydraulic Excavators:\u003c\/strong\u003e 311, 311B, 311C, 311D LRR, 311F LRR, 312, 312B, 312B L, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313B, 313D, 313D2, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, E110B, E120B\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Cold Planer:\u003c\/strong\u003e PM-465\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e990173, 0990173\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":42453951217747,"sku":"990173","price":19.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/990173_01.jpg?v=1757647560","url":"https:\/\/www.reliableaftermarketparts.co.uk\/products\/990173-ring-backup-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}