333-8673 130 mm Rod Diameter U-Cup Seal
Cat® 130 mm rod diameter U-cup seal for stick cylinders
Description
The U-cup seal, also known as a U-seal, is designed to provide an effective seal for hydraulic cylinders. It is designed to fit in a groove in the cylinder bore or piston. When the cylinder is pressurized, the seal is forced against the cylinder wall or piston, forming a tight, effective seal. It prevents hydraulic pressure from leaking out of the cylinder, ensuring smooth, efficient operation.
Attributes
- Designed to withstand high pressure levels.
- Designed to withstand high and low temperatures.
- Withstands the abrasiveness of hydraulic oil and resists long-term wear.
Applications
The U-cup seal provides sealing in hydraulic cylinders used for functions such as lifting and tilting the work tool, ensuring reliable operation. Widely used on Caterpillar 320C, 320D, 330C, 330D, 336D, 336E, 340, 340F, 345B, 345C, 345D, 349, 349D, 349E, 349F, 350, 352, 352F, 355, 365B, 365C, 365D, 374D, 374E, 374F and 385C excavators; 345, 345C, 345D, 365, 365C, 374D and 775 OEM applications; 365C, 385C, MH3275 and MH3295 material handlers; R1700 and R2900 wheel loaders; and R1700 underground mining.
Specifications
| Inside Diameter | 128.4 mm (5.06 in) |
|---|---|
| Material | Nitrile / NBR / HNBR / XNBR Rubber |
| Outside Diameter | 145 mm (5.71 in) |
| Weight | 0.04 kg (0.08 lb) |
| Width | 10 mm (0.39 in) |
Compatible Equipment
- Motor Graders: 349 GC
- Excavators: 349F L, 374, 340, 350, 352, 374F L, 350MHPU, 355, 349, 345C L, 345D, 365B, 349D L, 352F, 365C L, 349E L, 349E L VG, 345D L, 385C L, 385C, 365C, 349E, 345C, 365B L, 374F, 330, 349D2, 349D2 L, 374D L, 349D
- Wheel Loaders: R2900 XE, R1700 XE
Additional information
| Machine Model | 330, 340, 345C, 345C L, 345D, 345D L, 349, 349 GC, 349D, 349D L, 349D2, 349D2 L, 349E, 349E L, 349E L VG, 349F L, 350, 350MHPU, 352, 352F, 355, 365B, 365B L, 365C, 365C L, 374, 374D L, 374F, 374F L, 385C, 385C L, R1700 XE, R2900 XE |
|---|---|
| Equipment Type | |
| Part Source | Genuine OEM |








