Sealing Ring 8G-4190

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8G-4190
8G-4190
Caterpillar Grader

Sealing Ring 8G-4190

PRODUCT DESCRIPTION:

This 8G-4190 sealing ring is a professional OEM-matched sealing component custom-tailored for Caterpillar Motor Grader 120/140/130, widely applied to the static and dynamic sealing of key connection parts of the machine’s hydraulic system, fluid pipeline, pump valve assembly and hydraulic cylinder. As a core precision sealing accessory for construction machinery, it forms a reliable airtight barrier for the machine’s fluid systems, and provides stable and durable sealing protection for the motor grader’s long-term operation under harsh construction conditions such as heavy load, high hydraulic pressure, strong vibration and dust interference.

PRODUCT DETAILS

Key Advantages

1. OEM Standard Perfect Compatibility : 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 120/140/130 motor graders. No secondary trimming or modification is required, and it can achieve seamless fit with the original machine parts.

2. High-performance Oil-resistant Sealing Material : Adopts industrial-grade high-quality oil-resistant rubber composite material (NBR/FKM optional), which has excellent oil resistance, high pressure resistance, wear resistance and anti-aging performance. It can resist the erosion of hydraulic oil for a long time, and is not easy to harden, crack or swell after long-term use.

3. Ultra-precise Molding Process : Processed by high-precision mold vulcanization and molding, the product has extremely small dimensional tolerance, smooth and burr-free sealing surface, and uniform material density. It ensures close contact with the metal mating surface, effectively avoiding fluid leakage caused by dimensional deviation and surface defects.

4. Strong Environmental & Working Condition Adaptability : The material has excellent high and low temperature resistance and anti-vibration performance, can work stably in complex construction site environments, and will not lose its elasticity and sealing performance due to extreme temperature changes and mechanical vibration; it also has good chemical resistance, and is not affected by the additives in hydraulic oil.

5. Easy Installation & Cost-saving Maintenance : Adopts a lightweight and integrated structural design, conforming to Caterpillar’s original assembly specifications, and can be installed and replaced quickly with conventional maintenance tools without special equipment. Timely replacement of the sealing ring can avoid serious damage to high-value host components such as hydraulic pumps, valves and cylinders caused by seal failure, significantly reducing the overall maintenance cost of the machine.

SPECIFICATION

Item

Specification/Parameter

Part Number

8G-4190

Product Name

Sealing Ring

Applicable Equipment

Caterpillar Motor Grader 120/140/130

Main Material

Industrial-grade high-performance oil-resistant rubber (NBR/FKM)

Core Performance

Excellent oil resistance, high pressure resistance, wear resistance, anti-aging, high/low temperature resistance, micro gap compensation

Dimensional Tolerance

±0.01mm, fully compliant with Caterpillar original design standards

Working Temperature

-30℃ ~ +120℃

Working Pressure

Adapt to the original hydraulic system working pressure of Caterpillar motor grader (≥25MPa)

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 120/140/130 motor grader

Application Scene

Daily maintenance, regular overhaul, on-site emergency replacement and preventive maintenance of Caterpillar motor grader hydraulic and fluid systems


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