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Premium Oil Seal 19109 – Essential Leak Protection for SINOTRUK Howo Chassis

PART NO.:
19109
Part Name:
Oil Seal
Russian Name:
Масляное уплотнение

The 19109 Oil Seal is a precision-engineered sealing component designed to prevent lubricant leakage and contaminant ingress in critical rotating assemblies of SINOTRUK Howo heavy-duty trucks. As a premier supplier of genuine Sinotruk howo parts, we offer this oil seal as a direct OEM replacement, manufactured to the original equipment’s exacting standards. The seal features a high-quality nitrile rubber (NBR) compound with a precision-machined sealing lip and a steel casing, providing exceptional resistance to oil, heat, and wear, ensuring reliable sealing performance under the extreme speeds, temperatures, and contaminant exposure typical of heavy-duty trucking.

This oil seal (OEM 19109) is essential for maintaining proper lubrication in wheel hubs, axles, transmissions, and other rotating assemblies, preventing costly leaks and component damage. Its robust construction and precise fit guarantee a leak-free seal that extends component life. The 19109 is built to endure the rigors of long-haul transport, off-road operations, and severe environmental exposure, delivering dependable service over thousands of miles.

OEM direct replacement • Premium NBR compound • Steel casing • Precision sealing lip

19109 Oil Seal
19109 Oil Seal (EN)
Масляное уплотнение 19109 (RU)
Sello de aceite 19109 (ES)
19109 Oil Seal
19109 Oil Seal (EN)
Масляное уплотнение 19109 (RU)
Sello de aceite 19109 (ES)
19109 Oil Seal
19109 Oil Seal (EN)
Масляное уплотнение 19109 (RU)
Sello de aceite 19109 (ES)

Product Overview – 19109 Oil Seal

The 19109 Oil Seal is a critical component designed to retain lubricating oil within a housing while excluding dirt, water, and other contaminants from entering rotating assemblies such as wheel hubs, axle shafts, and transmission output shafts. Engineered for SINOTRUK Howo trucks, this seal is a direct OEM replacement that guarantees correct fit, reliable sealing, and long service life. Manufactured to the original specifications, it ensures a seamless integration with the vehicle’s existing components.

The seal consists of a rigid outer metal case that provides structural support and ensures a tight fit in the housing bore. The sealing element is molded from a specially formulated nitrile rubber (NBR) compound that offers excellent resistance to petroleum-based oils, greases, and temperature extremes. The primary sealing lip is precision-machined with a hydrodynamic rib pattern that helps to pump oil back into the sump during rotation, reducing friction and wear. A garter spring maintains constant lip pressure against the shaft, ensuring a positive seal even under pressure fluctuations and shaft deflection.

This oil seal is essential for maintaining proper lubrication, preventing fluid loss, and protecting internal components from abrasive contaminants. Its robust construction and precise engineering guarantee reliable performance over extended service intervals, meeting the rigorous demands of heavy-duty trucking. It is the direct replacement you can trust to keep your SINOTRUK Howo’s rotating assemblies properly sealed and lubricated.

Technical Specifications – 19109 Oil Seal

Parameter Specification
OEM Number 19109
Product Name Oil Seal (Radial Shaft Seal)
Brand SINOTRUK Howo
Material (Sealing Element) Nitrile Rubber (NBR), 70 Shore A
Casing Material Steel (zinc-plated, corrosion-resistant)
Inner Diameter (ID) 35.0 mm (OEM specification)
Outer Diameter (OD) 52.0 mm
Width (Thickness) 8.0 mm
Operating Temperature -40°C to +120°C
Max. Linear Speed 15 m/s (typical)
Fluid Compatibility Engine oil, gear oil, grease, water-glycol
Spring Material Stainless steel (garter spring)
Certification ISO 9001, OEM validated
All values verified for 19109 Oil Seal

Key Features of the 19109 Oil Seal

Premium NBR compound – provides excellent resistance to oil, heat, and abrasion, ensuring long-lasting sealing performance.
Precision-machined sealing lip – features a hydrodynamic rib pattern that reduces friction and improves sealing efficiency.
Stainless steel garter spring – maintains constant lip contact pressure, ensuring a positive seal even under shaft deflection.
Rigid steel casing – provides structural integrity and a tight fit in the housing bore, preventing leakage around the outside diameter.
Wide temperature range – reliable from -40°C to +120°C, suitable for all climates.
Direct OEM fitment – identical dimensions and specifications as the original seal, simplifying replacement.
Prevents lubricant loss – maintains proper oil levels in wheel hubs, axles, and gearboxes, reducing wear.
Extends component life – protects bearings and gears from contamination, reducing costly repairs.

Compatibility & Applications – 19109

The 19109 Oil Seal is specifically designed for SINOTRUK Howo heavy-duty trucks, including Howo A7, T7H, T5G, and other models that use this seal in wheel hub assemblies, axle shafts, transmission output shafts, and differential pinion shafts. Its standard 35×52×8 mm dimensions make it a versatile replacement for a wide range of rotating shaft sealing applications.

This seal is suitable for a wide range of applications, including long-haul trucking, regional distribution, construction, mining, and agricultural operations. Its robust construction and oil-resistant material ensure reliable sealing even under sustained heavy loads and extreme operating conditions.

When replacing, always verify the shaft diameter, housing bore, and width to ensure a perfect match. The 19109 is a direct-fit component that simplifies maintenance and restores original sealing performance.

Installation & Maintenance for 19109

Installing the 19109 Oil Seal requires proper tools and careful handling to avoid damage. Begin by removing the old seal using a seal puller or a suitable pry tool, taking care not to damage the housing bore. Thoroughly clean the housing bore and inspect it for burrs, scratches, or corrosion that could compromise the seal’s fit.

Apply a thin coat of clean oil or grease to the seal’s outer casing and the housing bore to ease installation. Use a seal installation tool or a suitable socket to evenly press the new seal into the bore, ensuring it is seated squarely and to the correct depth. The seal lip should face the oil side (usually inward), and the garter spring should remain in place. After installation, clean the shaft surface and lubricate the sealing lip with a small amount of clean oil to prevent dry startup.

After installation, re-assemble the component and check for leaks. Regular maintenance includes periodic inspection of the seal for signs of leakage, and checking for shaft wear or damage that could affect sealing performance. Replace the seal if any leakage is observed during routine service. This seal is engineered for long life, but proper installation and regular checks are essential for continued reliability.

With correct installation and periodic inspection, this oil seal will provide years of leak-free service.

Pro Tip: When installing, ensure the seal is not cocked in the bore – use a proper installation tool. If the shaft has a wear groove, consider using a repair sleeve. Always replace seals in pairs when working on differentials or wheel ends to maintain balanced sealing.

Quality Assurance – 19109 Oil Seal

This oil seal is manufactured in an ISO 9001-certified facility using premium NBR compound and high-quality steel. The raw materials are tested for hardness, tensile strength, and oil resistance to ensure they meet OEM specifications. The molding and machining processes are precisely controlled to achieve consistent dimensions and lip geometry.

Every seal undergoes 100% dimensional inspection, including inner diameter, outer diameter, and width verification. We also perform lip integrity checks and spring tension testing. Random samples are subjected to dynamic sealing tests, temperature cycling, and oil immersion to validate long-term durability. The steel casing is zinc-plated for corrosion resistance.

Our commitment to quality ensures a seal that delivers reliable, leak-free performance, protecting your vehicle’s rotating assemblies from lubricant loss and contamination. Backed by a comprehensive warranty, this seal offers peace of mind for fleet operators and owner-operators.

Choose genuine quality for your sealing needs – choose the 19109 OEM oil seal.

ISO 9001 OEM Validated Dynamic Tested 24-Month Warranty

Why Choose the 19109 Oil Seal for Your SINOTRUK Howo?

The 19109 Oil Seal is a small but critical component that ensures the reliability and longevity of rotating assemblies in your SINOTRUK Howo. Its premium NBR material, precision-machined lip, and robust construction guarantee leak-free sealing, protecting bearings and gears from costly wear and contamination. It is the genuine solution you need.

By choosing this genuine OEM-quality seal, you avoid the risks of premature leakage, shaft wear, and component failure that can occur with inferior aftermarket seals. It is engineered for long-lasting performance, reducing maintenance intervals and ensuring your truck’s rotating assemblies remain properly lubricated. The 19109 delivers the reliability you expect from a genuine SINOTRUK Howo component.

Fleet operators will benefit from reduced lubricant consumption, fewer wheel-end and differential repairs, and improved vehicle uptime. Owner-operators will gain confidence in their truck’s ability to handle heavy loads and harsh conditions without seal failures. This seal is the dependable choice for professionals who demand the best.

Invest in this OEM oil seal and experience the difference that genuine quality makes. Its proven reliability and engineering excellence make it the smart choice for anyone who values performance and durability. The 19109 sets the standard for oil seals in heavy-duty trucks.

Order your 19109 Oil Seal today and ensure your truck’s rotating components remain protected and well-lubricated for miles to come.

OEM 19109 SINOTRUK Howo Approved Premium Oil Seal
19109 Oil Seal – Premium SINOTRUK Howo Chassis Parts

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