5J-4974 121.8 mm ID O-Ring
Cat® 121.8 mm ID Plastic O-Ring
Wholesale only · Full payment before shipment · Send your machine nameplate to confirm fitment
Description
An O-ring is a round ring designed to form a seal between two mating surfaces. The sealing element is typically made of various plastic materials, including nylon and other thermoplastics. When the O-ring is pressed, it fills the gap between components and prevents contaminants from entering.
Attributes
Offers excellent wear resistance.
Manufactured to precise technical specifications for ruggedness, durability, reliable performance, and outstanding productivity.
Applications
The O-ring forms a strong, reliable seal to prevent fluid leakage and is widely used on Cat® motor graders, excavators, OEM applications, backhoe loaders, integrated toolcarriers, skidders, pipelayers, dozers, scrapers, wheel tractor-scrapers, trucks, bottom dump trailers, wheel dozers (for dozers), compactors, wheel loaders, track-type tractors, track loaders, articulated trucks, buckets – loaders with hydraulics, engines (piston), harvesters, power trains and lift trucks.
Specifications
| Cross-Section Width | 9.3 mm (0.37 in) |
|---|---|
| Remarks | Dimensions and material descriptions are for reference only. Color may differ from the image. |
| Inside Diameter | 121.8 mm (4.8 in) |
| Material Description | PTFE provides excellent performance in air, engine oil, diesel fuel and coolant applications, but is prone to installation damage and debris. Suitable for ultra-high-temperature applications. |
| Cross-Section Height | 2.9 mm (0.11 in) |
| Material | Polytetrafluoroethylene (PTFE) Plastic |
| Outside Diameter | 127.64 mm (5.03 in) |
| Thickness | 9.3 mm (0.37 in) |
Compatible Equipment
- Track Loaders: 973K
- Dozers: D6M, D6R, D6R II, D6N, D5H
- Excavators: 621G, 345C, 325B L
- Wheel Loaders: 972M, 966M
- Asphalt Pavers: AD45, AD63
Additional information
| Machine Model | 325B L, 345C, 621G, 966M, 972M, 973K, AD45, AD63, D5H, D6M, D6N, D6R, D6R II |
|---|---|
| Equipment Type | Excavators, Wheel Loaders, Track Loaders, Dozers, Asphalt Pavers |
| Part Source | Genuine OEM |








