O-Ring-5K-5129

banner

One-Stop Parts Solutions for Peak Equipment Performance

5K-5129
5K-5129
Caterpillar Grader

O-Ring-5K-5129

PRODUCT DESCRIPTION:

This 5K-5129 O-Ring is a professional OEM-matched precision elastic sealing component custom-engineered for Caterpillar Motor Grader 120/130/140/160. It is widely applied to the static sealing of key connection parts in the machine’s hydraulic system, lubrication system, fluid pipeline flanges, pump valve assemblies and hydraulic cylinder static mating surfaces. Tailored for the heavy-load, high-vibration and dusty construction working conditions of heavy-duty motor graders, it is made of high-elasticity oil-resistant rubber to form a reliable and deformable airtight barrier for hydraulic oil, lubricating oil and other fluid media. It effectively prevents medium leakage and external impurity intrusion, and provides consistent, long-lasting and stable static sealing protection for the efficient and trouble-free operation of the hydraulic and fluid systems of all applicable Caterpillar grader models.

PRODUCT DETAILS

Key Advantages

1. OEM Standard Full-model Precise Compatibility : Strictly manufactured in accordance with Caterpillar’s original technical drawings and precision requirements, the inner diameter, cross-section diameter and hardness of the O-ring are 100% matched with the key static sealing parts of the four grader models. It can be directly embedded into the original machine’s sealing groove without secondary trimming, grinding or adjustment, ensuring a seamless fit with original machine parts and factory-level sealing performance.

2. High-performance Oil-resistant Elastic Rubber : Adopts Caterpillar OEM standard industrial-grade high-quality oil-resistant rubber (NBR/FKM optional), with excellent elasticity, oil resistance, high pressure resistance, anti-aging and tear resistance. It can adapt to the harsh construction environment of heavy load, large temperature variation and dust, and is not prone to deformation or failure after long-term use.

3. Ultra-precise Molding & Uniform Material Density : Processed by high-precision integral mold vulcanization molding technology, the O-ring has an extremely small dimensional tolerance, a smooth and burr-free surface and uniform material density. It ensures close and tight contact with the metal sealing groove and mating surface, effectively avoiding fluid leakage caused by dimensional deviation and surface defects.

4. Strong Adaptability to Harsh Construction Conditions : The rubber material has excellent high and low temperature resistance and vibration resistance, and can work stably in a wide temperature range. It will not lose elasticity and sealing performance due to extreme cold, high temperature or continuous mechanical vibration of the grader during operation, and maintains structural integrity and stable sealing performance for a long service life.

5. Universal Design Reduces Inventory & Management Costs : As a universal O-ring for four core Caterpillar motor grader models, it realizes the unified configuration of spare parts, eliminates the trouble of purchasing and storing separate O-rings for different models, and significantly reduces the inventory pressure and spare part management costs of maintenance and operation enterprises.

6. Simple Installation & Efficient Maintenance : Conforming to Caterpillar’s original standard sealing groove design for this series of graders, it features a small and integrated structure that can be quickly installed and replaced by direct embedding into the sealing groove with conventional maintenance tools (no special professional equipment required). Timely replacement of this O-ring avoids serious damage to high-value hydraulic components such as pump valves and hydraulic cylinders caused by seal failure, greatly shortening on-site maintenance time and reducing the overall maintenance cost of the graders.

SPECIFICATION

Item

Specification/Parameter

Part Number

5K-5129

Product Name

O-Ring

Applicable Equipment

Caterpillar Motor Grader 120/130/140/160

Main Material

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

Core Performance

Excellent static sealing, high elasticity gap compensation, oil/pressure/aging resistance, impurity isolation, vibration adaptation

Dimensional Tolerance

±0.01mm (inner diameter & cross-section diameter), fully compliant with Caterpillar original design standards

Working Temperature

-40℃ ~ +120℃

Working Pressure

≥30MPa, adapt to the original hydraulic system working pressure of all applicable Caterpillar motor graders

Installation Type

Direct embedding into sealing groove, in-situ replacement (no secondary processing)

Application Position

Hydraulic system pipeline joints, pump valve assembly sealing grooves, hydraulic cylinder static mating surfaces, lubrication system flanges and other key static sealing parts of Caterpillar Motor Grader 120/130/140/160

Application Scene

Daily maintenance, regular overhaul, on-site emergency replacement and preventive maintenance of hydraulic, lubrication and fluid systems of Caterpillar Motor Grader 120/130/140/160


INQUIRE IMMEDIATELY

+86 15853738837

+86 15954702799

836d55a6f68dd5f8b1db37fe2d543322

xinghuida8@gmail.com