OEM 813402961 The XCMG O-Ring 6.5×1.5 813402961 is a genuine OEM sealing element engineered to prevent fluid leakage at miniature joints, pilot ports, and mating surfaces inside hydraulic systems on XCMG excavators. Identified by part number 813402961, this precision-molded O-ring delivers reliable sealing and long service life in the toughest construction, mining, and quarry environments.
Manufactured from high-grade NBR rubber with a smooth, flash-free finish, the 813402961 O-Ring offers outstanding compression set resistance, oil compatibility, and dimensional accuracy. Its exact OEM inner diameter of 6.5 mm and cross-section of 1.5 mm guarantee a direct replacement without modification.
By sealing against mating metal surfaces under pressure, this O-ring prevents internal and external leakage, reduces fluid loss, and keeps boom, arm, and bucket functions responsive through long working shifts.
The 813402961 O-Ring is molded from high-grade NBR rubber that resists compression set under repeated pressure cycles. This keeps the seal round and the cross-section stable over time.
A smooth, flash-free surface provides excellent contact with miniature mating faces. The sealing line stays consistent through millions of pressure cycles.
Inner diameter and cross-section are set to the exact OEM profile so the O-ring seats correctly in small grooves and cannot roll under high pressure. Leakage stays within specification.
The NBR compound resists oil, water, and mild chemicals in coastal, mining, and high-humidity environments. The seal stays serviceable for years.
By sealing miniature joints and mating surfaces smoothly, the 813402961 O-ring prevents fluid loss and keeps cylinder response predictable across the whole machine.
Production starts with certified NBR compound that is checked for Mooney viscosity, hardness, and cure characteristics. Each batch is mixed under controlled conditions.
The O-ring is compression-molded in precision tooling that holds inner diameter and cross-section to ISO 3601 Class B limits. Flash is trimmed to a smooth finish.
Controlled curing brings the hardness to 70 Shore A while keeping the compound elastic. This combination resists compression set and cracking without becoming brittle.
After curing, each O-ring is deflashed, inspected, and measured. Batch records let XCMG trace every unit back to its rubber compound lot number.
The result is an O-ring that performs predictably for thousands of hours on your XCMG excavator, season after season.
O-rings seal joints and mating surfaces in hydraulic systems. Every pressure cycle loads them through compression, friction, and heat.
The 813402961 O-Ring provides dependable sealing and consistent contact pressure, preventing fluid loss that would reduce efficiency and accelerate wear.
Field records from heavy excavation work show that machines fitted with genuine XCMG O-rings suffer fewer leak-related failures and shorter repair sessions.
The NBR compound also resists moisture, dust, and chemical exposure, keeping performance stable across long service intervals in the field.
Inspect O-rings regularly for cracks, swelling, or flattening. Replace any compromised unit promptly with a genuine 813402961 component.
By keeping miniature hydraulic joints sealed, this O-ring supports safe, productive excavator operation every working day.
The 813402961 O-Ring installs with standard hand tools, which keeps downtime and labour costs low during scheduled servicing or emergency replacement.
Park the excavator on firm level ground, lower the attachment, and release all hydraulic pressure. Lock out the machine before work begins.
Remove the joint or fitting and inspect the groove and mating surfaces for wear or scoring. Replace any damaged mating parts before fitting the new O-ring.
Clean all surfaces, lubricate the O-ring with compatible hydraulic fluid, and seat it into the groove without twisting. Tighten the fitting to the specified torque.
After assembly, pressurize the circuit slowly and check for weeping at the joint. Run the machine at low idle and confirm a leak-free seal across the full pressure range.
During routine service, inspect the O-ring for cracks or swelling. Replace any degraded component promptly to preserve hydraulic performance.
Choosing the genuine 813402961 O-Ring pays back over time by preventing leaks, cutting diagnostic hours, and reducing unplanned downtime.
A single failed O-ring can spray hydraulic fluid, damage nearby components, and create a safety hazard that halts production for hours.
Across a typical 10,000-hour service life, the joint cycles millions of times. The NBR compound of the 813402961 keeps sealing performance consistent.
Reliable sealing also extends the life of connected components such as pumps, valves, and cylinders, reducing replacement frequency.
Field data gathered from large mining and construction fleets shows genuine XCMG seals cut hydraulic-related downtime by as much as 18 percent.
The durable construction and quality compound keep the O-ring serviceable for years, removing the need for premature replacement.
XCMG applies sustainable manufacturing principles to the 813402961 O-Ring through recyclable packaging and energy-efficient production processes.
The extended service life, often exceeding 10,000 hours in normal conditions, cuts material waste and lowers the environmental footprint of replacement parts.
Preventing hydraulic leaks also avoids secondary damage and soil contamination, which supports regulatory compliance and responsible site stewardship.
Rubber and packaging materials are free from restricted substances and comply with RoHS and REACH rules, ensuring safe handling and disposal.
Selecting genuine XCMG hydraulic components supports responsible equipment management while delivering superior operational reliability.
The precision-engineered design allows long, dependable service, which minimises resource consumption across the machine’s working life.
The 813402961 O-Ring is held in XCMG regional distribution centres across North America, Europe, Asia, and Australia, supporting fast delivery.
Every unit is packed in a sealed plastic bag inside a fitted carton, shielding it from dust, moisture, and contamination in transit.
For fleet-wide orders, XCMG offers volume pricing and consolidated freight options that reduce procurement costs and streamline inventory planning.
Real-time stock visibility and dedicated supply chain support help fulfil urgent requests quickly, shortening downtime and keeping excavators working.
Sturdy packaging preserves the O-ring’s factory condition until it is installed, preventing the surface damage that can occur in poorly stored spare parts.
With XCMG’s global aftermarket network behind it, you can depend on consistent quality and availability to keep your fleet at full capacity.
Every 813402961 O-Ring comes from an ISO 9001 and ISO 14001 certified plant with complete material traceability from compound to packed product.
Incoming rubber compound is tested for hardness, tensile strength, and cure rate before release to the production line.
During manufacturing, inner diameter, cross-section, and hardness are monitored continuously, and every finished unit receives a full visual inspection.
Post-production checks include dimensional verification, compression set testing, and surface finish measurement to confirm each O-ring meets specification.
Sample O-rings from each batch undergo fluid immersion, heat aging, and pressure cycling to prove long-term durability and stable sealing.
Only O-rings that clear every quality gate are released, so you receive a dependable, high-performance hydraulic component every time.
Cheap aftermarket O-rings often use lower-grade rubber, inconsistent hardness, or inaccurate dimensions. Those shortcuts lead to leaks, swelling, and poor fitment.
The genuine 813402961 is built to XCMG’s exacting standards, delivering correct fit, reliable sealing, and durable performance in the field.
Its high-grade NBR compound and precision molding provide consistent results, lowering the chance of expensive hydraulic failures and machine downtime.
Using genuine XCMG parts also preserves warranty coverage, protects resale value, and maintains compatibility with other OEM systems on the machine.
Backed by XCMG’s global quality standards and technical support, this O-ring offers performance you can rely on in the harshest conditions.
Choose genuine XCMG for uncompromising hydraulic performance in the most demanding working environments.
The XCMG 813402961 O-Ring 6.5×1.5 is a vital hydraulic component for any XCMG excavator, keeping miniature joints sealed and efficient in demanding conditions.
Its precision-engineered design, high-grade NBR compound, and robust manufacturing deliver dependable performance in harsh environments.
By preventing hydraulic leaks and maintaining stable system pressure, this O-ring reduces downtime, lowers maintenance costs, and extends machine service life.
Always purchase genuine XCMG parts from authorised dealers to guarantee authenticity, quality, and performance for your equipment fleet.
Choose the 813402961 O-Ring for dependable hydraulic sealing and lasting operational peace of mind.
Partner with XCMG – your trusted source for heavy equipment hydraulic components that deliver real value.
OEM 813402961 – XCMG O-Ring 6.5×1.5 – the definitive hydraulic sealing solution for your excavator’s miniature joints and fittings. Engineered for durability, designed for reliable sealing, and backed by global quality standards. Trust the original to protect your investment and maximise uptime.
