{"product_id":"1211372-ring-backup-fits-caterpillar-models","title":"1211372 Ring Backup Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Backup Ring for Caterpillar (Cat) Excavators and Engines\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement backup ring (Cat part number 1211372) is a hydraulic sealing component used in Caterpillar excavators and engine\/machine hydraulic systems. Backup rings are installed alongside primary O-ring seals to prevent seal extrusion under high-pressure conditions, maintaining system integrity in hydraulic cylinders, valves, and related assemblies.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWeight: 0.1 lbs\u003c\/li\u003e\n\u003cli\u003eType: Backup (anti-extrusion) ring\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Excavators (320 Series):\u003c\/strong\u003e 320B, 320B L, 320B LL, 320B FM LL, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Excavators (321-329 Series):\u003c\/strong\u003e 321C, 321D LCR, 322C, 323D L, 323D LN, 323D SA, 323D2 L, 323E L, 324D, 324D L, 324E, 324E L, 324E LN, 325C, 325D, 325D L, 326D L, 328D LCR, 329D, 329D L, 329E, 329E L, 329E LN\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Engines:\u003c\/strong\u003e 3066, 3116, 3126, 3126B, C6, C6.4, C7\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Mobile Hydraulic Power Units:\u003c\/strong\u003e 325D L, 329D L, 329E\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e1211372\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":42452247773267,"sku":"1211372","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/1211372_01.jpg?v=1757787935","url":"https:\/\/www.reliableaftermarketparts.ca\/products\/1211372-ring-backup-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}