802164445
XCMG 802164445 Seal – Premium Elastomeric O‑Ring for Heavy‑Duty Fluid Containment
2026-08-02
802164442
XCMG 802164442 Flexible Coupling – Heavy-Duty Driveline Connection for Articulated Dump Trucks
2026-08-02

XCMG 802164444 Seal – High‑Performance OEM Sealing Ring for Articulated Dump Truck Hydraulic Systems

Seal

Seal

Уплотнение

Уплотнение

Sello

Sello

The 802164444 Seal is a genuine XCMG high‑performance sealing ring engineered to provide reliable, leak‑proof fluid containment in the hydraulic cylinders, valve blocks, and drivetrain components of articulated dump trucks and heavy mining equipment.

This OEM seal, identified by part number 802164444, is manufactured from a premium fluoroelastomer (FKM) compound that delivers exceptional resistance to high temperatures, aggressive hydraulic fluids, and long‑term compression set.

Designed to operate in the most demanding mining and construction environments, the 802164444 seal ensures that critical systems remain free from leaks, reducing downtime and maintenance costs while protecting the environment from fluid spills.

Its precision‑molded dimensions and consistent hardness make it the ideal replacement for worn or aged seals, restoring factory‑level sealing integrity to XCMG articulated dump trucks.

Technical Specifications

Parameter Specification
OEM Number802164444
Product NameSeal (Genuine OEM)
BrandXCMG
MaterialHigh‑grade FKM (Fluoroelastomer), 75 Shore A
Inner Diameter (ID)52.0 mm ±0.15 mm
Cross‑Section Diameter (CS)3.53 mm ±0.10 mm
Hardness (Shore A)75 ± 5
Temperature Range-30°C to +200°C (continuous)
Max Sealing Pressure (static)40 MPa (5800 PSI) with proper gland design
Fluid CompatibilityMineral oils, synthetic hydraulic fluids, engine oils, transmission fluids, water‑glycol, diesel, and greases
Compression Set≤ 20% (70 hrs @ 150°C, per ASTM D395)
Tensile Strength≥ 14 MPa
Elongation at Break≥ 200%
ApplicationsHydraulic cylinder pistons, valve covers, flange seals, accumulator ports, brake caliper seals
Compatible ModelsXCMG XDA30, XDA40, XDA45, XDA45U, XDA60, TA30, AD45, AD60 articulated dump trucks
StandardsISO 9001, ASTM D2000, SAE J200, AS568
Shelf Life5 years (original packaging, < 40°C, away from ozone)

Product Overview

The 802164444 Seal is a precision‑engineered O‑ring that provides a static or dynamic seal between mating components in hydraulic and pneumatic systems.

This genuine XCMG sealing ring is designed to fit into standard gland grooves, compressing between two surfaces to create a barrier that prevents fluid escape and contaminant ingress.

Manufactured from high‑grade FKM (fluoroelastomer), the ring offers exceptional resistance to high temperatures, aggressive chemicals, and long‑term compression set.

The precise dimensional tolerances ensure a perfect seal without over‑compression, which could damage the ring or the mating surfaces.

A failed sealing ring can cause debilitating leaks, fluid contamination, and safety hazards. The 802164444 ring eliminates these risks with reliable, long‑lasting performance.

The Critical Role of Sealing Rings in Heavy Equipment

In XCMG articulated dump trucks, sealing rings like the 802164444 are used extensively in hydraulic cylinder pistons, valve blocks, accumulator ports, flange joints, and brake systems.

They provide the primary barrier that keeps high‑pressure hydraulic oil contained and prevents external contaminants from entering the system.

Without an effective seal, hydraulic pressure drops, system response becomes sluggish, and component wear accelerates due to contaminated fluid.

The 802164444 sealing ring is engineered to withstand the thermal cycling, pressure spikes, and vibration inherent in mining and construction operations.

Its robust elastomeric formulation ensures that it maintains its sealing force over extended periods, even with minimal maintenance.

Design and Engineering Excellence

The 802164444 sealing ring features a precision‑molded circular cross‑section with a smooth, defect‑free surface that ensures consistent compression and sealing performance.

The ring is manufactured using a high‑cavity tooling process that maintains tight dimensional control and eliminates flash or parting lines that could compromise sealing.

Its FKM material is formulated to resist swelling in petroleum‑based fluids, while maintaining elasticity at low temperatures to prevent brittle failure.

The ring’s hardness of 75 Shore A provides the optimal balance between sealing force and resistance to extrusion, even under high pressures.

The design also considers dynamic applications – the ring can accommodate minor axial or radial movement without losing its sealing capability.

Advanced FKM Material Science

The 802164444 sealing ring is produced from a premium fluoroelastomer compound that offers superior resistance to high temperatures, oxidation, and chemical attack.

This material retains its physical properties across a wide temperature range, from -30°C to +200°C, making it suitable for both arctic and tropical environments.

The FKM compound exhibits excellent resistance to compression set, meaning the ring maintains its shape and sealing force even after prolonged deflection.

It also resists swelling in the presence of hydraulic fluids, transmission oils, and diesel fuel, ensuring dimensional stability and leak‑free performance.

Advanced material science guarantees that the 802164444 sealing ring delivers consistent performance under the most severe operating conditions.

Applications in Mining and Construction

The 802164444 sealing ring is widely used in XCMG articulated dump trucks and other off‑highway machinery operating in surface mining, underground mining, and heavy construction.

It is commonly found in hydraulic cylinder piston seals, valve block O‑rings, accumulator port seals, flange gaskets, and brake caliper sealing applications.

The ring’s ability to withstand high pressures and aggressive fluids makes it ideal for use in steering systems, suspension circuits, and transmission controls.

In dusty, wet, and abrasive environments, the seal’s robust construction prevents particle ingress that could cause scoring or premature wear.

The 802164444 ring is also compatible with other XCMG equipment, including wheel loaders, excavators, and motor graders that use the same groove dimensions.

Quality Assurance and Testing

Every 802164444 sealing ring is manufactured in an ISO 9001‑certified facility under strict quality control procedures.

Raw FKM compounds are sourced from approved suppliers and tested for viscosity, cure rate, and physical properties before molding.

During molding, each ring is inspected for flash, sink marks, and dimensional accuracy using laser‑based measurement systems.

Finished rings are subjected to hardness testing, tensile strength verification, and compression set testing per ASTM D395.

100% visual inspection ensures that no surface defects, voids, or contamination are present. This guarantees that every 802164444 sealing ring meets XCMG’s rigorous standards.

Compatibility and Fitment

The 802164444 sealing ring is designed as a direct replacement for the original O‑ring on XCMG articulated dump trucks, including models XDA30, XDA40, XDA45, XDA45U, XDA60, TA30, AD45, AD60, and others.

Its dimensions (52 mm ID × 3.53 mm CS) conform to standard AS568 sizing, making it interchangeable with many industry‑standard glands.

When replacing a worn seal, the 802164444 ring restores the system’s sealing integrity to factory levels.

For cross‑brand applications, verify that the groove dimensions, pressure, and temperature ratings are compatible.

Always consult the parts manual to confirm the correct seal for your specific application.

Installation and Maintenance Guidelines

Proper installation of the 802164444 sealing ring is essential for achieving a leak‑free seal. Before installation, inspect the groove and mating surfaces for burrs, scratches, or corrosion.

Clean the groove and surrounding area with a lint‑free cloth and a compatible solvent to remove dirt, old sealant, or debris.

Lubricate the ring and the groove with a thin film of the system’s hydraulic fluid or a recommended assembly lubricant to prevent pinching or twisting during installation.

Gently roll the ring into the groove, avoiding over‑stretching, which can cause permanent deformation. Ensure the ring is seated evenly without twisting.

After assembly, check that the ring does not protrude beyond the gland surface and that all parts are correctly aligned.

During routine maintenance, inspect the ring for signs of hardening, cracking, swelling, or extrusion. Replace immediately if any damage is observed.

Regularly check fluid levels and quality, as degraded oil can accelerate seal aging.

Compliance and Safety Standards

The 802164444 sealing ring complies with international standards including ASTM D2000 (classification system for rubber materials) and SAE J200.

It meets the requirements for oil resistance, heat resistance, and low‑temperature flexibility specified for heavy‑duty off‑highway applications.

The materials used are free from restricted substances such as lead, cadmium, and polycyclic aromatic hydrocarbons (PAHs).

This ensures that the sealing ring is safe for operators and environmentally responsible.

Using genuine XCMG seals like the 802164444 also helps maintain compliance with equipment warranty and safety regulations.

Why Choose Genuine XCMG 802164444?

Aftermarket sealing rings may appear similar, but they often use lower‑grade elastomers, inferior curing processes, or inaccurate dimensions that lead to premature failure.

The genuine 802164444 sealing ring is engineered specifically for XCMG equipment, ensuring perfect fitment, precise compression, and long‑term reliability.

Using genuine seals reduces the risk of leaks, system contamination, and costly downtime.

Genuine XCMG parts also preserve the warranty and resale value of your equipment.

When you choose the 802164444, you invest in proven reliability and long‑term cost savings.

Conclusion

The XCMG 802164444 Seal is an essential component for maintaining fluid containment and system integrity in articulated dump trucks and heavy machinery.

Its advanced FKM material, precision molding, and rigorous quality assurance make it the reliable choice for demanding mining, quarrying, and construction applications.

Whether you are performing a hydraulic cylinder rebuild, valve overhaul, or routine seal replacement, this genuine sealing ring delivers the durability and performance you expect from XCMG.

Always source genuine XCMG components from authorised dealers to guarantee authenticity and quality.

With the 802164444 sealing ring, you can keep your equipment leak‑free, reduce downtime, and protect your investment.

Choose genuine – choose XCMG for all your sealing needs.

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