1682271 Ring-Backup Fits Caterpillar Models
1682271 Ring-Backup Fits Caterpillar Models
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One New Aftermarket Replacement Hydraulic Backup Ring for Caterpillar (Cat) Equipment
This aftermarket replacement backup ring (Cat part number 1682271 / 168-2271) is a hydraulic sealing component used in swing and stabilizer cylinders on Caterpillar construction equipment. Backup rings work in conjunction with O-rings to prevent seal extrusion under high-pressure hydraulic conditions, extending the life of the sealing system and maintaining cylinder integrity.
Specifications
- Inner Diameter: 99.70 mm (approx. 3.875 in.)
- Material: Urethane / Rubber
- Application: Hydraulic swing and stabilizer cylinders
Compatible Models
Caterpillar: Fits a range of Cat excavators, backhoes, and construction equipment utilizing swing and stabilizer cylinder assemblies with OEM part number 1682271 / 168-2271. Verify fit against your machine's hydraulic cylinder seal kit requirements before ordering.
Replaces Part Number(s):
1682271, 168-2271
Aftermarket Interchange Numbers
CTC-1682271
New aftermarket replacement part - not remanufactured, not used.



