1793047 Ring-Back Up Fits Caterpillar Models
1793047 Ring-Back Up Fits Caterpillar Models
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One New Aftermarket Replacement Backup Ring for Caterpillar (Cat) Excavators
This backup ring (also listed as Ring-Back Up) is a hydraulic sealing component used in the track adjuster and hydraulic systems on Caterpillar (Cat) excavators. Backup rings support O-rings under pressure, preventing extrusion and maintaining a reliable seal in high-pressure hydraulic circuits. The material is nylon plastic, which provides good resistance to fuels, oils, and lubricants.
Specifications
- Inside Diameter: 80 mm (approx. 3.15 in.)
- Dimensions: approx. 15.24 cm L x 12.70 cm W x 2.54 cm D
- Weight: approx. 0.10 lbs.
- Material: Nylon plastic
Compatible Models
Caterpillar Excavators: 322C, 322C FM, 324D FM, 324D FM LL, 325C, 325C FM, 325C L, 325D FM, 325D FM LL, 325D L, 325D MH, 328D LCR, 329D L, 330C, 330C L, 330D, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E H, 336E L, 336E LH, 336E LN, 336F L, 336D2 XE, 336E L, 336F L XE
Caterpillar Engines (Machine/Excavator): 3126, 3126B, C-9, C7, C9
Caterpillar Mobile Hydraulic Power Units: 329D L, 330D, 336D L, 336E HVG
Replaces Part Number(s):
1793047
New aftermarket replacement part - not remanufactured, not used.



