8C3078 FKM (75) O-Ring fit Caterpillar
8C3078 FKM (75) O-Ring fit Caterpillar
- New aftermarket part
- 30 day returns
- Manufacturer's warranty
8C3078 FKM (75) O-Ring for Caterpillar Equipment
The 8C3078 is an O-ring sealing element used in fixed and some moving connections on Caterpillar articulated dump trucks and asphalt pavers. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).
The seal is identified by the Caterpillar part number 8C-3078 and is specified as an FKM fluoroelastomer O-ring with a hardness of 75 Shore A. Its listed dimensions and operating temperature range are provided below for identification and application checks.
Fitment
The 8C3078 O-ring is listed for the following Caterpillar equipment types and models:
- Caterpillar articulated dump trucks
- Caterpillar asphalt pavers
- Caterpillar D350E
- Caterpillar D400E
- Caterpillar AP-1000
- Caterpillar AP-1000B
- Caterpillar AP-1050
- Caterpillar AP-1050B
- Caterpillar AP-650B
- Caterpillar AP-800C
- Caterpillar AP-800D
- Caterpillar BG-225C
Before installation, the equipment model, the existing seal designation, and the dimensions of the sealing groove should be checked against the service application. The listed fitment identifies the equipment models associated with this part number; it does not specify a particular machine location or assembly.
Cross-reference numbers
| Part number | 8C3078 |
| Hyphenated part number format | 8C-3078 |
| SAE AS568 dash size | -133 |
8C3078 and 8C-3078 are the two listed formats for the same part number. The SAE AS568 designation identifies the O-ring size category and is included for dimensional reference.
Specifications
| Part type | O-ring |
| Application | Sealing of fixed and some moving parts |
| Equipment manufacturer | Caterpillar |
| Material | Fluoroelastomer (FKM) |
| Material designation | FKM (75) |
| Hardness | 75 Shore A |
| Size | 133 |
| SAE AS568 dash size | -133 |
| Cross-section diameter | 0.1 in |
| Inner diameter | 1.8 in |
| Outer diameter | 2.005 in |
| Temperature range | -40 to 350 °F |
| Coating | None |
| Listed weight | 0.1 lb |
| Listed length | 25.4 cm |
| Listed width | 25.4 cm |
| Listed depth | 2.54 cm |
The dimensions refer to the O-ring specification supplied for part number 8C3078: 0.1 in cross-section diameter, 1.8 in inner diameter, and 2.005 in outer diameter. The material and temperature data apply to the listed FKM formulation with 75 Shore A hardness. No coating is specified for this part.
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