We’re happy to help you find the best option for your application.
In the hydraulic system of construction machinery, a small sealing ring determines the reliability of the entire system. As an industry benchmark model, the XCMG XE2000 excavator has extremely stringent hydraulic sealing requirements. Now, we are launching a military-grade O-ring seal (part number: 803192477, specification 30×2.65), specifically developed for the XE2000’s high-pressure hydraulic system, eliminating leakage and ensuring long-term stable operation of the equipment!
🔍 Precise Size: Standard 30×2.65mm size, perfectly matching key components such as XE2000 hydraulic valve groups and cylinders.
⚡ Special Material: Made with imported hydrogenated nitrile butadiene rubber (HNBR), offering 3 times the oil resistance and 5 times the lifespan.
🔥 Extreme Resistance: Maintains elasticity under operating conditions from -40℃ to 150℃, with a compressive strength of up to 35MPa.
🛡️ Double Protection: Special surface treatment for wear resistance, aging resistance, and chemical corrosion resistance.
1️⃣ Solves 95% of hydraulic system leakage problems.
2️⃣ Withstands over 5000 pressure cycle tests.
3️⃣ Meets ISO 3601-1 international certification standards.
4️⃣ 300% longer service life compared to ordinary rubber rings.
5️⃣ Reduces hydraulic oil contamination risk by 60%.
6️⃣ A single O-ring can save thousands of yuan in maintenance costs.
✔ Main control valve assembly seal
✔ Hydraulic cylinder piston seal
✔ Pilot oil circuit connection
✔ Rotary motor sealing interface
“In an open-pit coal mine in Inner Mongolia, after using the 803192477 O-ring, the hydraulic system maintenance interval was extended from 500 hours to 2000 hours”—Equipment Manager of a mining group

318307881 steel pipe assembly XCMG XE2000 excavator spare parts
1 318307921 1 WELDED STEEL PIPE
2 803103345 1 CONNECTOR
3 803379383 1 CONNECTOR
4 805047567 4 SCREW M10×30 GB/T70.1-2008
5 803192477 1 ORING 30×2.65 GB/T3452.1-2005
Hydraulic Sealing Expert #XCMG Original Standard #Mining Machinery Maintenance #O-rings #Excavator Repair