1U3998 Piston Seal fit Caterpillar
1U3998 Piston Seal fit Caterpillar
- New aftermarket part
- 30 day returns
- Manufacturer's warranty
1U3998 Piston Seal for Caterpillar Hydraulic Equipment
1U3998 is a piston seal for hydraulic equipment manufactured by Caterpillar, including motor graders, track loaders, and excavators. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The part is identified by the SKU 1U3998 and the Caterpillar part-number format 1U-3998.
Fitment
The seal is listed for the following Caterpillar equipment types and models:
- Motor graders: 160H, 160K, 163H, 120, 120G, 120H, 120H ES, 120K, 12G, 12H, 12H ES, 12H NA, 12K, 135H, 140H, 140H ES, 140H NA, 140K, 143H, and 160G.
- Track loader: 973.
- Excavators: 231D and 235D.
Fitment is determined by the equipment model designation and the hydraulic-cylinder seal dimensions. The model list includes Caterpillar motor graders from the 12, 120, 135, 140, 143, 160, and 163 series, as well as Caterpillar 973 track loaders and 231D and 235D excavators.
Cross-reference numbers
- 1U3998
- 1U-3998
1U3998 and 1U-3998 are two written formats for the same referenced part number.
Specifications
| Part type | Hydraulic piston seal |
| Equipment manufacturer | Caterpillar |
| Seal form | Type 1 |
| Groove diameter — H | 1.88 in, tolerance ±0.003 in |
| Groove width — A | 0.19 in, tolerance ±0.002 in |
| Hole diameter | 2.25 in |
| Weight | 0.1 lb |
| Length | 8.89 cm |
| Width | 15.24 cm |
| Depth | 1.27 cm |
| SKU | 1U3998 |
The dimensional data refers to the seal groove and hole dimensions specified for part number 1U-3998. The listed weight and package dimensions are 0.1 lb, 8.89 cm in length, 15.24 cm in width, and 1.27 cm in depth.
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