TC Type Double Lip Skeleton Seal-14Y-50-11323

Core Features

Dynamic Leak-Proof Oil Sealing: The main lip and self-tightening spring provide constant radial pressure, preventing oil leakage along the shaft/rod end, avoiding oil loss and insufficient lubrication of components, and ensuring stable system pressure.

Double-Lip Dust Protection: The secondary lip blocks dust, mud, and gravel from entering mining/construction environments, preventing lubricant emulsification and component wear and corrosion.

Shaft/Rod Adaptation Compensation: The lip elasticity adapts to minor wear and runout of the shaft/rod, and the self-tightening spring compensates for the elasticity loss after lip aging, maintaining long-term sealing performance.

Installation Positioning Support: The metal frame ensures no deformation during installation, and the interference fit with the seat hole achieves static sealing, accurately positioning the sealing position and avoiding offset friction.

Friction and Temperature Stability: The narrow sealing band design reduces rotational/reciprocating friction, controls temperature rise, adapts to medium-high speed rotation and high-frequency reciprocating conditions, and has no significant thermal degradation.

Product Superiority

Original Factory Precise Fit: Manufactured according to Komatsu original drawings, the inner diameter, outer diameter, width, and lip interference fit are perfectly matched to the D65/D85 shaft end/cylinder/seat bore, requiring no modification. After press fitting, it is seamlessly compatible with the shaft/rod and housing, avoiding leakage or abnormal wear caused by installation gaps.

Oil and Aging Resistance: Nitrile rubber (NBR) lip + cold-rolled steel skeleton + stainless steel self-tightening spring, resistant to gear oil/hydraulic oil, anti-aging, tear-resistant, with a service life of over 3000 hours.

Durable and Reliable Sealing: Double lip + built-in spring structure, the main lip seals oil, and the secondary lip prevents dust. It maintains a seal even with minor shaft/rod wear; the lip contact pressure is uniform, the coefficient of rotational friction is ≤0.003, and the temperature rise is ≤15℃, suitable for continuous heavy-duty operation.

High adaptability to various working conditions: Temperature range -40℃ to 120℃, vibration and impact resistant, suitable for dusty, humid, and temperature-varying working environments such as mines and construction sites, and not easily deformed or cracked.

Convenient installation and maintenance: Standard frame structure allows for quick installation using press-fit tools, requiring no special equipment, reducing downtime and maintenance costs during maintenance.

Applicable Scene

This product is designed for heavy-duty continuous operations like mine stripping, large-scale infrastructure projects, and land leveling using Komatsu D65/D85 bulldozers. It specifically addresses sealing needs in critical components including hydraulic cylinders, gearboxes, and final drives. For optimal performance, we recommend replacing it with compatible sealing gaskets and bearings to enhance the reliability of hydraulic and transmission systems.