The genuine XCMG Sealing Ring with OEM number 800172706 is a precision-engineered polyurethane seal designed for high-pressure dynamic applications in XCMG articulated dump trucks and heavy construction equipment. This sealing ring provides reliable fluid containment in hydraulic cylinders, swivel joints, and rotary actuators, significantly reducing internal leakage and improving overall machine efficiency.
The XCMG Sealing Ring 800172706 is designed for demanding rod and piston sealing applications where conventional O‑rings fail due to extrusion and wear. Its polyurethane formulation provides outstanding tensile strength and low compression set, maintaining a tight seal even after millions of cycles. Independent testing confirms this sealing ring survives 10 million strokes at 35 MPa with leakage below 0.1 ml/min.
In articulated dump trucks, hydraulic cylinders experience extreme side loads and pressure spikes. The 800172706 sealing ring’s high modulus and anti-extrusion properties prevent nibbling and spiral failure, delivering consistent performance in suspension and steering circuits.
The material selected for OEM 800172706 is a specially formulated thermoplastic polyurethane with a hardness of 93 Shore A. It combines the elasticity of rubber with the wear resistance of engineering plastics. The compound is resistant to hydrolysis and oxidation, making it suitable for water-containing fluids and long-term storage.
Unlike standard nitrile or fluorocarbon seals, this polyurethane maintains its sealing force down to -35°C without becoming brittle, and up to 110°C without excessive softening. The low friction coefficient (µ ≈ 0.2 against steel) reduces stick-slip and lowers energy consumption.
The 80 mm × 6 mm dimensions of the 800172706 sealing ring are common across many XCMG hydraulic cylinders: front suspension cylinders on AD60 trucks, steering cylinders on GR215 graders, and tilt cylinders on XE900 excavators. Fleet managers can reduce spares inventory by standardizing on this single part number.
Each ring is laser-marked with the XCMG part number and batch code for traceability. The packaging includes a QR code linking to the certificate of conformance, verifying material batch test results.
Proper installation of Sealing Ring 800172706 is critical. Before assembly, inspect the groove for burrs, sharp edges, or contamination. The groove must conform to ISO 3601-1 dimensions with a surface finish of Ra ≤ 1.6 µm on the static faces and Ra ≤ 0.4 µm on the dynamic sealing surface. Lubricate the ring and groove with clean hydraulic oil or assembly paste.
Use a spiral or cone installation tool to stretch the ring over rod threads or pistons. Never use sharp picks or screwdrivers that could nick the sealing lip. Ensure the ring is not twisted after placement. For piston applications, orient the ring with the larger diameter facing the pressure side (if asymmetric).
After assembly, perform a low‑pressure air test (2–5 bar) to detect any leakage. If bubbles appear, the ring may be damaged or the groove dimensions incorrect. Always replace a ring that has been pinched or scratched during installation.
The most common failure of non-genuine sealing rings is extrusion into the dynamic gap due to insufficient hardness or wrong cross-section. Genuine XCMG 800172706 rings have a 93 Shore A hardness and are precisely molded to ±0.1 mm, resisting extrusion up to 50 MPa. Counterfeit rings often use recycled polyurethane with lower strength and poor abrasion resistance.
Another issue is chemical swelling or thermal degradation. XCMG rings are tested for 1,000 hours in common hydraulic oils per ASTM D471. Always purchase from authorized distributors and look for the XCMG laser marking on the ring face.
Rebuilding a leaking hydraulic cylinder costs $2,000–$5,000 in parts and labor, plus downtime. The XCMG 800172706 sealing ring extends cylinder rebuild intervals by up to 2.5× compared to aftermarket seals. Fleet data shows a 55% reduction in cylinder-related downtime after switching to genuine XCMG seals.
Additionally, the low friction of the polyurethane reduces hydraulic system energy loss by 2–4% in continuously cycling applications. For a fleet of ten AD60 trucks, this translates to annual fuel savings of over 5,000 liters.
All XCMG Sealing Ring 800172706 products are manufactured in an ISO 9001:2015 and IATF 16949 certified facility. Each batch undergoes incoming material verification, molding process controls, and 100% dimensional inspection. Sample rings from every lot are subjected to pressure cycle testing (50,000 cycles at 35 MPa) and compression set measurement.
XCMG offers a 12-month warranty against manufacturing defects. Counterfeit rings not only compromise equipment reliability but also void machine warranties. Protect your investment – always insist on genuine XCMG parts and verify the holographic authenticity label on the packaging.
