Original ZF O-Ring 63×3 mm – Part No. 0634313568 Genuine ZF Transmission Shaft Seal for ZF Gearbox Systems
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- In-stock availability for urgent repairs.
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- P/N:634313568
Looking for authentic ZF parts? This is the original ZF O-Ring (Part Number: 0634313568, Size: 63×3 mm) , a high-performance radial sealing ring designed for input/output shafts and cover joints in ZF transmissions. As a trusted ZF parts supplier, we offer genuine-quality O-rings made from oil-resistant NBR (nitrile rubber) to ensure long-lasting, leak-free performance under high pressure and temperature. Whether you’re searching for a reliable ZF parts dealer or need essential ZF gearbox parts, this precision O-ring is a must-have for transmission maintenance, overhaul, and repair of trucks, buses, and commercial vehicles.
Product Overview
The ZF O-Ring 63×3 mm (Part No. 0634313568) is a critical static and dynamic sealing component used in ZF mechanical and automated manual transmissions. It provides a tight, durable seal between mating surfaces such as gear shift levers, sensor housings, breather units, and transmission covers—preventing gear oil leakage and contamination ingress.
Made from high-grade nitrile rubber (NBR), it offers excellent resistance to mineral oils, fuels, and operating temperatures ranging from -40°C to +120°C, ensuring reliable performance in harsh working conditions. This O-ring is commonly replaced during transmission disassembly, overhauls, or when diagnosing oil seepage around control mechanisms.
Compatible with various ZF Ecomid, ZF S6, and other heavy-duty transmission models, it’s widely used in commercial vehicles from MAN, Scania, DAF, Volvo, Sinotruk, Foton, and more.
As a professional ZF parts supplier, we deliver OEM-spec components with traceability and consistency—making us your preferred global ZF parts dealer for workshops, fleets, and distributors.
Technical Specifications (Technical Data Table)
| Parameter | Specification |
|---|---|
| Part Name | O-Ring / Radial Sealing Ring |
| Part Number | 0634313568 |
| OEM Number | ZF 0634313568 |
| Size (ID × Cross Section) | 63 mm × 3 mm |
| Material | Nitrile Rubber (NBR) |
| Hardness | 70±5 Shore A |
| Temperature Range | -40°C to +120°C |
| Color | Black |
| Application Type | Static & Dynamic Seals |
| Function | Prevent Oil Leakage at Joints & Shafts |
| Compatibility | ZF Ecomid, ZF S6 Series Transmissions |
| Condition | New, Original Quality |
| Packaging | Individually Packed – Anti-static & Moisture Resistant |
Installation Tip: Always clean the groove and mating surface before installing the new O-ring. Check for scratches, burrs, or deformation on the housing that could damage the seal. Lubricate the O-ring lightly with transmission oil or silicone grease to prevent twisting or pinching during assembly. Do not stretch excessively—install gently using proper tools. After reassembly, refill oil and check for leaks after running the engine for several minutes. Replace all old O-rings during overhauls—even if they appear intact. Recommended for use by trained technicians performing ZF transmission repairs.
Packaging & Shipping
By Express : Suitable for sample order or <50 KG Fast:3-10 days High shipping cost Door to door service
By Air : Suitable for >50 KG Fast: 3-7 days Lower than express cost Airport to airport service
By Sea: Suitable for >300 KG Lower cost port to port service
As a leading supplier and dealer of ZF parts, we provide genuine components to maintain the integrity and efficiency of your gearbox system. Trust in our expertise and quality assurance to keep your ZF gearbox running smoothly.
| Installation Tips | Surface prep: Degrease with ZF Cliclean 3 solvent； Gasket application: Use Loctite 518 in continuous 1.5mm bead；； Alignment: Install using factory alignment pins (ZF tool B40 5003 recommended)；； Torque sequence:Initial: 12Nm star pattern—–Final: 28Nm + 90° angle torque；；；； Post-install: Pressure test at 2.5 bar before fluid fill |
|---|
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