9X-7735 O-Ring
Fuel System Seal
Description
Fuel system seals are designed and manufactured specifically to work in fuel systems, and use both an O-ring and a rectangular cross-section design.
Features
Cat® fuel system seals undergo additional advanced inspection to ensure reliable performance in this critical application. They are made from materials matched to the fluids, temperatures, and pressures in Cat fuel systems. These materials resist wear and extrusion and provide excellent resistance to seal compression set. In addition, some seals are coated with PTFE (Polytetrafluoroethylene) to minimize seal twisting and cutting during seal installation.
Our seal dimensions strictly adhere to tight tolerances, ensuring they fit snugly into the seal grooves with the necessary seal compression.
Cat sealing systems prevent leaks and contamination of more expensive parts. Protect your investment with Genuine Cat® seals.
Applications
Fuel system seals are used in engine fuel systems.
Specifications
| Polymer | FKM (Fluorocarbon) |
|---|---|
| Material Hardness | 90A |
| Dash Size | 127 in |
| Inside Diameter | 36.2 mm (1.42 in) |
| Material Description | FKM provides excellent performance in most applications, including air, engine oil, diesel fuel, hydraulic oil, automatic transmission fluid and biodiesel. Most FKM formulations must not be used with coolant/urea. FKM is effective at high temperatures and has good abrasion and cut resistance. |
| Coating | PTFE – Polytetrafluoroethylene |
| Cross-Section Diameter | 2.6 mm (0.1 in) |
| Remarks | Dimensions and material descriptions are for reference only. Color may differ from the image. |
| Material | Fluoroelastomer (FKM) Rubber |
Compatible Equipment
- Generator Sets: 3406B, 3406C, 3512B, 3516C
- Track Loaders: 824G, 826G
- Dozers: D11N, D11R, D8R, D8N
- Excavators: 3516B, 3508B
- Wheel Loaders: 980G
- Off-Highway Trucks: 777, 777D, 785
Additional information
| Machine Model | 3406B, 3406C, 3508B, 3512B, 3516B, 3516C, 777, 777D, 785, 824G, 826G, 980G, D11N, D11R, D8N, D8R |
|---|---|
| Equipment Type | Excavators, Wheel Loaders, Track Loaders, Dozers, Off-Highway Trucks, Generator Sets |
| Part Source | Genuine OEM |





