Sealing Ring-7G-4822

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7G-4822
7G-4822
Caterpillar Grader

Sealing Ring-7G-4822

PRODUCT DESCRIPTION:

This 7G-4822 sealing ring is a professional OEM-matched precision sealing component exclusively engineered for Caterpillar Motor Grader 120/18 and Wheel Loader 980/982. It is widely applied to the static and dynamic sealing of key connection parts in the hydraulic systems, fluid pipelines, pump valve assemblies and hydraulic cylinders of both types of engineering machinery. Custom-designed for the heavy-load, high-vibration and dusty working conditions of motor graders and loaders, it forms a reliable airtight barrier for fluid media, effectively prevents leakage and impurity intrusion, and provides long-lasting and stable sealing protection for the normal operation of the core hydraulic systems of different Caterpillar equipment.

PRODUCT DETAILS

Key Advantages

1. OEM Standard Full Compatibility for Multi-equipment : Strictly manufactured in accordance with Caterpillar’s original technical drawings, precision parameters and sealing design requirements, the size, cross-section structure and hardness of the sealing ring are 100% matched with the key sealing parts of Caterpillar Motor Grader 120/18 and Wheel Loader 980/982. No secondary trimming, grinding or modification is required, ensuring a seamless fit with the original machine parts of both types of equipment and consistent sealing performance with factory configuration.

2. High-performance Oil-resistant Sealing Material : Adopts industrial-grade high-quality oil-resistant rubber (NBR/FKM optional) with excellent oil resistance, high pressure resistance, wear resistance and anti-aging performance. The material can resist long-term erosion of hydraulic oil and its additives, adapt to the harsh construction environment of heavy load, strong vibration, dust and large temperature changes, and is not easy to harden, crack, swell or deform after long-term use.

3. Ultra-precise Molding & Burr-free Surface : Processed by high-precision mold vulcanization and integral molding, the product has extremely small dimensional tolerance and a smooth, burr-free sealing surface with uniform material density. It ensures close and tight contact with the metal mating surface of hydraulic components, effectively avoiding fluid leakage caused by dimensional deviation and surface defects, and guaranteeing the sealing effect of key parts.

4. Strong Adaptability to Harsh Working Conditions : The material has excellent high and low temperature resistance, vibration resistance and chemical resistance, and can work stably in the temperature range of complex construction sites without losing elasticity and sealing performance due to extreme cold or high temperature. It can withstand the continuous mechanical vibration of motor graders and loaders during operation, and maintains structural integrity and sealing performance for a long time.

5. Universal Design Reduces Inventory Cost : As a universal sealing ring for Caterpillar motor graders and wheel loaders (4 models in total), it realizes the unified configuration of spare parts for different types of engineering machinery, eliminates the trouble of purchasing and storing separate sealing rings for motor graders and loaders, and significantly reduces the inventory pressure and spare part management cost of maintenance and operation enterprises.

6. Simple Installation & Cost-saving Maintenance : Adopts a lightweight and integrated structural design, conforming to Caterpillar’s original assembly specifications for both motor graders and loaders. It can be installed and replaced quickly with conventional maintenance tools without special professional equipment. Timely replacement of this sealing ring can avoid serious damage to high-value host components such as hydraulic pumps, valves and cylinders caused by seal failure, and significantly reduce the overall maintenance cost of the two types of equipment.

SPECIFICATION

Item

Specification/Parameter

Part Number

7G-4822

Product Name

Sealing Ring

Applicable Equipment

Caterpillar Motor Grader 120/18; Caterpillar Wheel Loader 980/982

Main Material

Industrial-grade high-performance oil-resistant rubber (NBR/FKM, Caterpillar OEM standard)

Core Performance

Excellent static & dynamic sealing, oil resistance, high pressure resistance, wear resistance, anti-aging, micro gap compensation, vibration resistance

Dimensional Tolerance

±0.01mm, fully compliant with Caterpillar original design standards

Working Temperature

-35℃ ~ +120℃

Working Pressure

≥25MPa, adapt to the original hydraulic system working pressure of Caterpillar motor graders and loaders

Installation Type

Direct press-fit installation, original position replacement (no secondary processing)

Application Position

Hydraulic cylinder mating surfaces, fluid pipeline joints, pump valve assembly connection parts, hydraulic manifold block ports and other key static/dynamic sealing parts of Caterpillar Motor Grader 120/18 and Wheel Loader 980/982

Application Scene

Daily maintenance, regular overhaul, on-site emergency replacement and preventive maintenance of hydraulic and fluid systems of Caterpillar Motor Grader 120/18 and Wheel Loader 980/982


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