Shaanxi Kelong New Materials Technology Co., Ltd., founded in 1996 from Xianyang Kelong Rubber Products Institute, is a leading innovator specializing in hydraulic seal sets, high-pressure hoses, coal mine auxiliary transportation equipment, repair services, and related technologies.
Our products are widely applied across crucial industrial sectors including coal mining, civil aviation, high-speed rail, engineering machinery, and wind power. Trusted worldwide, we continuously advance our offerings with a firm commitment to quality and innovation.
With over 500 employees and 180+ engineers and technicians, backed by an R&D center and sustained investment exceeding 7% of annual revenue, Kelong ensures strong production and innovation capabilities to address high-pressure hydraulic system demands.
Ranked top three in the domestic coal machine sealing industry, with expanding presence in high-pressure rubber hoses and Frame-type handling vehicles markets, Kelong commands an 8% share of the domestic market.
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The engineering equipment industry continually evolves, driven by the accelerating demand for high-performance, reliable high-pressure hydraulic systems. Piston rod seals stand at the heart of these systems, ensuring durability and reducing leakage under increasingly harsh operating environments.
Material innovation such as PTFE, HNBR, and specialty elastomers has transformed piston rod seals' capabilities, offering exceptional wear resistance, compatibility with diverse hydraulic fluids, and excellent sealing under rapid pressure fluctuations.
Additionally, the integration of advanced manufacturing and quality control standards like ISO and IRIS ensures each seal meets exacting industry demands, critical in sectors like mining, wind power, and heavy construction machinery, where downtime costs are substantial.
Piston rod seals designed for high-pressure hydraulic systems are essential for ensuring efficient and safe operation of engineering equipment under extreme conditions. These seals are not only crucial in preventing fluid leaks but also in withstanding mechanical wear, chemical exposure, and thermal fluctuations.
In mining, equipment such as hydraulic shovels, roof supports, and drilling rigs operate under extreme dust, vibration, and pressure. Seals with robust material resistance and high dimensional stability can dramatically reduce downtime and maintenance costs—vital for profitability.
Wind turbines use hydraulic systems extensively for pitch control and braking mechanisms. Piston rod seals here must tolerate varying loads, temperature ranges, and exposure to environmental contaminants like salt spray. Seal reliability directly influences turbine availability and power output.
Excavators, cranes, and compactors require seals that maintain integrity amidst frequent start-stop cycles and exposure to impacted debris and moisture. Advanced single and double-acting rod seals tailored for large diameter cylinders improve performance and extend service life.
The precision and safety requirements in rail and aviation hydraulic equipment compel the use of piston rod seals engineered for ultra-low friction, minimal hysteresis, and high fatigue resistance. They contribute to smooth operation under high-speed, high-pressure conditions.
Over 500 employees including 180+ engineers, a dedicated R&D center, and stable 7%+ annual R&D investment empower a diverse and reliable production capacity.
ISO and IRIS certifications back our rigorous product inspections, ensuring each piston rod seal meets highest standards for performance and longevity.
Robust workforce and strong R&D investment allow flexible manufacturing of custom seals suited for wide-ranging industrial hydraulic applications.
Advanced testing facilities simulate extreme hydraulic pressures and temperatures to validate seal design under real-world dynamic load conditions.
