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The oil seal is a critical chassis component that prevents lubricant leakage from rotating shafts and protects bearings from contamination, ensuring reliable operation and extended component life. For SINOTRUK HOWO heavy-duty trucks, the OEM number WG9231328772 identifies a premium-quality oil seal engineered to deliver exceptional sealing performance, durability, and precise fitment under the most demanding operating conditions. As a trusted supplier of Sinotruk howo parts, Deruna offers this genuine oil seal, manufactured to the strictest OEM specifications.
This component features a precision-molded elastomeric sealing lip, a robust metal casing, and a garter spring that maintains consistent contact pressure against the shaft surface. Its advanced design provides excellent resistance to oil, heat, and wear, ensuring long-lasting, leak-free performance in wheel ends, differentials, and transmission applications. Whether you are performing an axle overhaul or replacing a worn seal, this component delivers the sealing integrity and reliability that SINOTRUK HOWO trucks demand.
OEM direct replacement – no modifications needed | Engineered for SINOTRUK HOWO axle and drivetrain systems
Oil Seal
Масляное уплотнение
Retén de aceite
Oil Seal
Масляное уплотнение
Retén de aceite
Oil Seal
Масляное уплотнение
Retén de aceite
The WG9231328772 oil seal is a precision-engineered sealing component designed specifically for SINOTRUK HOWO heavy-duty trucks. It is used to retain lubricating oil within axle housings, differentials, and transmission cases while preventing the ingress of dirt, water, and other contaminants. This oil seal is manufactured to exacting OEM tolerances, ensuring a perfect fit and reliable performance in all operating conditions.
The seal features a high-quality nitrile rubber (NBR) or fluoroelastomer (FKM) sealing lip, bonded to a precision-stamped steel casing. The garter spring provides consistent radial load on the shaft, maintaining sealing pressure even under temperature fluctuations and shaft runout. The seal’s lip geometry is optimized to minimize friction while maximizing fluid retention, reducing wear on both the seal and the shaft.
Investing in the genuine WG9231328772 oil seal ensures that your truck maintains proper lubrication, reduces component wear, and prevents costly fluid leaks. It is the preferred choice for fleet operators and workshops that demand uncompromised quality and reliability from their sealing components.
| OEM Number | WG9231328772 |
| Part Name | Oil Seal (Rotary Shaft Seal) |
| Brand | SINOTRUK HOWO |
| Component Category | Chassis / Sealing |
| Lip Material | Nitrile rubber (NBR) / Fluoroelastomer (FKM) |
| Casing Material | Carbon steel, zinc-plated |
| Weight (approx.) | 0.18 kg (0.40 lbs) |
| Inner Diameter (shaft) | 85 mm |
| Outer Diameter (housing) | 110 mm |
| Overall Width | 12 mm |
| Lip Type | Single lip with garter spring |
| Operating Temperature Range | -40°C to +120°C (NBR) / -30°C to +200°C (FKM) |
| Maximum Shaft Speed | 3,000 RPM |
| Pressure Rating | 0.5 bar (7 psi) |
| Spring Material | Stainless steel |
| Application | SINOTRUK HOWO A7, T7, 6×4, 8×4, and most heavy-duty models (wheel ends, differentials, transmissions) |
All values are based on OEM engineering specifications for the WG9231328772 oil seal. Minor deviations may occur due to manufacturing tolerances.
The WG9231328772 seal features a high-quality NBR or FKM lip that provides excellent resistance to oil, heat, and wear, ensuring long-lasting sealing performance.
The stainless steel garter spring maintains constant radial load on the shaft, ensuring reliable sealing even under temperature fluctuations and shaft runout.
The zinc-plated steel casing provides excellent resistance to rust and corrosion, ensuring long-lasting durability in harsh operating environments.
The seal’s lip design minimizes friction while maximizing fluid retention, reducing wear on both the seal and the shaft surface.
Available in NBR or FKM materials, this oil seal operates reliably across a broad temperature range, from arctic cold to extreme heat.
With its durable materials and precision construction, this oil seal delivers long-lasting performance, reducing the frequency of maintenance and replacements.
The oil seal is a critical component that directly affects lubrication integrity, component life, and overall vehicle reliability. Using a counterfeit or substandard seal can lead to premature leakage, bearing contamination, and costly component failure. The genuine WG9231328772 oil seal eliminates these risks through OEM-grade materials, precision manufacturing, and rigorous quality testing.
Key benefits of choosing the authentic WG9231328772:
Deruna sources the WG9231328772 oil seal directly from authorized manufacturers, subjecting each unit to a thorough quality inspection. We package each component securely to prevent damage during shipping, so it arrives ready for installation.
Proper installation and regular maintenance are essential to maximize the service life and performance of the WG9231328772 oil seal. Follow these best practices:
Before installing the WG9231328772 seal, inspect the shaft surface for wear, scoring, or corrosion. The housing bore should be clean and free of burrs.
Apply a thin layer of clean oil or grease to the seal lip to prevent dry running and ensure proper seating during initial operation.
Always use a seal driver or press tool to install the WG9231328772 seal evenly into the bore. Never hammer directly on the seal.
Regularly inspect the seal area for signs of leakage. Replace the WG9231328772 seal immediately if any oil seepage or damage is detected.
Always refer to the SINOTRUK HOWO service manual for detailed axle and drivetrain procedures, torque values, and inspection intervals. Regular maintenance of the WG9231328772 oil seal ensures optimal lubrication protection and component longevity.
The WG9231328772 oil seal is compatible with a wide range of SINOTRUK HOWO heavy-duty trucks and commercial vehicles, including:
For models not listed, cross-reference your original oil seal part number with WG9231328772. This seal is designed to fit SINOTRUK HOWO axle and drivetrain applications with standard shaft and housing dimensions. Please consult your vehicle’s service manual or a qualified technician to confirm compatibility.
The WG9231328772 oil seal is a vital component of the SINOTRUK HOWO drivetrain, providing reliable fluid retention and contamination protection in the most demanding heavy-duty applications. Its precision-elastomer sealing lip, garter spring, and corrosion-resistant casing ensure that your truck maintains proper lubrication and component protection, time after time.
By choosing the genuine WG9231328772 part, you protect your vehicle from the dangers of inferior aftermarket alternatives – premature leakage, bearing failure, and costly repairs. Instead, you invest in a component rigorously tested and validated by SINOTRUK HOWO, giving you peace of mind on every journey. Its superior materials, precision engineering, and temperature resistance contribute to lower maintenance costs, reduced downtime, and enhanced reliability.
As a dedicated supplier of Sinotruk howo parts, Deruna is committed to delivering the WG9231328772 oil seal with the highest level of quality assurance. Every unit is inspected to meet OEM specifications, ensuring that you receive a product you can trust.
Equip your SINOTRUK HOWO with the genuine WG9231328772 oil seal – engineered for strength, precision, and uncompromising sealing performance.
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