1211372 Ring Backup Fits Caterpillar Models
1211372 Ring Backup Fits Caterpillar Models
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One New Aftermarket Replacement Backup Ring for Caterpillar (Cat) Excavators and Engines
This 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.
Specifications
- Weight: 0.1 lbs
- Type: Backup (anti-extrusion) ring
Compatible Models
Caterpillar Excavators (320 Series): 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
Caterpillar Excavators (321-329 Series): 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
Caterpillar Engines: 3066, 3116, 3126, 3126B, C6, C6.4, C7
Caterpillar Mobile Hydraulic Power Units: 325D L, 329D L, 329E
Replaces Part Number(s):
1211372
New aftermarket replacement part - not remanufactured, not used.
