Description
Overview:
The O Ring for Kubota KX057-4 and KX057-5 Mini Excavators is a Genuine Kubota seal designed for hydraulic and fluid systems on compact construction machinery. Made from durable rubber, it provides a tight, reliable seal between mating components to prevent leaks, maintain pressure, and protect internal parts from contamination. This helps keep excavator functions such as boom, arm, bucket, and blade hydraulics operating efficiently with reduced downtime. The ring is engineered for a precise fit in Kubota applications, supporting quick, straightforward maintenance and consistent performance. Suitable for professional fleets and DIY owners alike, it is an ideal replacement part when servicing hydraulic connections, caps, valve blocks, and cylinder assemblies on machines including the Kubota KX057-4 and KX057-5.
Key Features:
- Genuine Kubota part for assured quality and correct fitment
- Robust rubber construction designed for sealing reliability in hydraulic systems
- Helps maintain system pressure and prevent oil leaks under working loads
- Supports smooth machine operation and reduces unplanned downtime
- Compatible with specified Kubota mini excavator models for easy selection
- Simple to install during routine servicing or repairs
- Suitable for use with common hydraulic fluids used in construction equipment
- A cost-effective preventative maintenance item to protect larger components
Typical Applications:
Used as a static or dynamic seal in hydraulic circuits on mini excavators, including pumps, cylinders, spools, valve blocks, hose adaptors, and end caps. Ideal for scheduled services, leak rectification, and component rebuilds to restore pressure retention and fluid integrity on Kubota compact equipment used in earthmoving, utilities, landscaping, and hire fleets.
Also known as:
Hydraulic O-ring, sealing ring, rubber seal ring, static seal, dynamic seal, excavator seal ring, oil seal ring, service seal for hydraulic fittings and cylinder interfaces on compact machinery.
Fits Models:
KX057-4, KX057-5, KX0574, KX0575, U45S, U48-4, U48-5, U484, U485, U50-5, U505, U55, U55-4, U55-5, U554, U555
Alternate Part Numbers:
RD411 66890, RD411-66890, RD41166890
Product Specifications
| L&S Part No. | RD411 66890 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Kubota |
| OEM No. | RD411 66890 |
| Unit of Sale | 1 |
| Applications | KX057-4, KX057-5, KX0574, KX0575, U45S, U48-4, U48-5, U484, U485, U50-5, U505, U55, U55-4, U55-5, U554, U555 |
| Machine Type | Excavators |
| Fits Brands | Kubota |
| Fits Models | KX057-4 | U55-4 | U48-4 | KX057-5 | U45S | U48-5 | U55 | U55-5 |
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