1U1738 Ring-Backup Fits Caterpillar Models
1U1738 Ring-Backup Fits Caterpillar Models
Couldn't load pickup availability
One New Aftermarket Replacement Backup Ring for Caterpillar (Cat) Equipment
This backup ring (part number 1U-1738) is a urethane rubber hydraulic sealing component used in Caterpillar cylinder assemblies. It features a 174.25mm (approximately 6.86 in) internal diameter and a 182.85mm outer diameter, and is installed alongside an O-ring to prevent seal extrusion under high-pressure hydraulic conditions. Backup rings are used in static and dynamic sealing applications including hydraulic cylinders, pumps, and valve systems.
Specifications
- Internal Diameter: 174.25mm
- Outer Diameter: 182.85mm
- Cross Section Width: 0.06 in
- Material: Urethane Rubber
- Note: Compatible with petroleum-based lubricants and hydraulic fluids at moderate temperatures. Not for use with water-soluble fluids.
Compatible Models
Caterpillar (Cat): Compatible with Caterpillar equipment using hydraulic cylinder assemblies -- verify fitment against your cylinder part number before ordering. No specific model list was available in catalog data; this part appears in the Cat hydraulic sealing parts catalog as a cylinder backup ring.
Replaces Part Number(s):
1U1738, 1U-1738
New aftermarket replacement part - not remanufactured, not used.
