3928406 Oil Seal | Engine Seal for Heavy Truck & Construction Machinery

Model 3928406 oil seal is a dedicated sealing part for 6BT and ISB series diesel engines, widely used as vulnerable spare parts for heavy trucks and construction machinery.

Manufactured strictly according to OEM drawings, this seal features ultra-tight dimensional tolerance and perfect installation tightness. It can directly replace original parts to effectively solve engine oil leakage problems.

Our 3928406 oil seal has been exported to Africa, Southeast Asia, the Middle East and other global markets, perfectly matching long-distance heavy trucks, mining excavators, wheel loaders, bulldozers and other construction equipment.

• Part Number: 3928406
• Product Type: Crankshaft Oil Seal / Engine Shaft Seal
• Compatible Engine: 6BT5.9, ISB5.9 Diesel Engine
• Applicable Equipment: Shaanxi Automobile & Dongfeng Heavy Trucks, Komatsu Excavators, Liugong Loaders, Mining Construction Machinery

1. Excellent Sealing Performance: Stable oil locking under high pressure, no oil leakage during long-term high-speed operation;
2. Strong Corrosion Resistance: Resist erosion of diesel and engine oil, work normally under temperature range from -40℃ to 180℃;
3. Long Service Life: 60% longer service life than ordinary non-brand seals;
4. Plug-and-play Installation: 1:1 OEM size, no cutting or modification needed for installation;
5. Stable Mass Production: Consistent quality for bulk orders, few defective products.

The seal is made of imported NBR nitrile rubber and embedded steel frame. It is produced through high-temperature vulcanization, precision stamping and hydraulic tightness test.

Every finished product will pass leak test before delivery to eliminate defective items.

1. Single package: Independent PE plastic bag to prevent dust, moisture and abrasion;
2. Small batch package: Neutral thick carton, 50 pieces per box with clear part number 3928406 label;
3. Sea freight bulk package: 5-layer thick export carton with waterproof film, marked with product name, part number and quantity;
4. Full container order: Cartons fixed on wooden pallets to avoid extrusion and collision during long-distance international transportation;
5. Customized service: OEM brand packaging, neutral packaging and customer logo printing are available.

1. Regular stock order: MOQ = 50 PCS;
2. Sample trial order: 10~20 PCS samples are acceptable, freight can be negotiated;
3. Custom size & special material order: MOQ = 500 PCS;
4. Long-term cooperative clients: Lower MOQ & better price for orders over 1000 PCS.

1. In-stock order: Shipment within 1~3 working days after deposit confirmation;
2. Normal bulk stock order: 3~7 working days;
3. Custom size, special material & OEM label order: 7~15 working days;
4. Full container sea order: Rush order schedule available, packing list provided synchronously.

• ISO9001 International Quality Management System Certification
• SGS Environmental Material Test Report
• Batch factory tightness inspection report for each shipment
• Meet import inspection standards for Africa, Europe, Southeast Asia machinery spare parts

1. Full inspection before delivery, free re-delivery for wrong or defective goods;
2. Return & exchange support for quality problems (non-artificial damage);
3. Free replacement for damaged goods caused by international logistics;
4. Free model matching consultation for regular customers all the time.

HES Co., Ltd is a company specializing in engineering machinery parts and Sinotruk Shacman truck components. Over the years since its establishment, the company has maintained excellent collaborations with multiple manufacturers such as XCMG, SDLG, Sinotruk, and Shacman. Adhering to the principles of "Quality First, Customer Supremacy, Credibility, and Win-Win Cooperation," we are committed to sincerely cooperating with all clients and pursuing mutual development.