803402429 XCMG GR2605 motor grader lip seal ring

803402429 XCMG GR2605 motor grader lip seal ring

803402429 is a lip-type skeleton oil seal specifically designed for XCMG construction machinery. It is suitable for rotating/reciprocating parts such as hydraulic cylinders, articulated shafts, and gearboxes. It is oil-resistant, wear-resistant, and provides reliable sealing; it is an original equipment manufacturer (OEM) standard seal.

Core Functions and Roles

Bidirectional Sealing: The lip seal fits against the shaft surface, preventing leakage of hydraulic oil and lubricating oil, while also blocking dust and mud from entering, protecting internal bearings and mating surfaces.

Suitable Operating Conditions: Suitable for medium and low pressure hydraulic systems, rotating shafts, and reciprocating motion components; suitable for heavy-duty, vibrating, and dusty environments in construction machinery.

Stable Structure: The built-in metal skeleton ensures installation rigidity and positioning accuracy; the lip seal has a self-tightening spring that maintains sealing force regardless of shaft diameter changes.

Key Parameters (Original Manufacturer Standard)

Model: 803402429
Type: Lip-type skeleton oil seal (TC type)
Material: Nitrile rubber (NBR), oil-resistant, wear-resistant, applicable temperature -40℃~120℃
Compatible with: Seals in hydraulic/transmission systems of XCMG graders (GR series), loaders (LW series), etc.
Standard: GB/T 9877 (National Standard for Lip Seals)

Common Installation Locations
Graders: Blade tilting cylinder, slewing bearing, articulation shaft, gearbox output shaft
Loaders: Boom/bucket cylinder, articulation pin, drive axle half shaft, hydraulic pump shaft head

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