ZF 634309631 – Shaft Seal Ø50 × Ø68 × 10 mm for ZF Marine Transmissions

ID 1232594

$ 110.69

1-2 weeks delivery time

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ZF 634309631 Shaft Seal with dimensions Ø50 × Ø68 × 10 mm is made of durable NBR (Nitrile Butadiene Rubber), providing excellent sealing performance against oils, lubricants, and saltwater. Designed for rotating shafts in marine transmission systems, it operates reliably within –30°C to +120°C and up to 20 bar (290 psi), ensuring leak prevention, reduced maintenance, and extended component life in demanding marine environments.

Description
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ZF 634309631 – Shaft Seal Ø50 × Ø68 × 10 mm

The ZF 634309631 Shaft Seal is a precision-engineered radial seal designed for rotating shafts in ZF marine transmission systems. Constructed from high-grade Nitrile Butadiene Rubber (NBR), it offers exceptional resistance to oils, lubricants, fuels, and saltwater. With an inner diameter of 50 mm, outer diameter of 68 mm, and thickness of 10 mm, this seal provides a secure, leak-free fit in marine applications. It is capable of withstanding temperatures from –30°C to +120°C and pressures up to 20 bar, ensuring optimal sealing performance even in harsh marine environments. The integrated dynamic sealing lip guarantees consistent contact under shaft rotation, helping protect transmission internals and extend service intervals.

Key Features:

Made from premium NBR (Nitrile Butadiene Rubber) for excellent oil and saltwater resistance
Seals rotating shafts to prevent oil leakage and environmental contamination
Operates in temperatures from –30°C to +120°C (–22°F to +248°F)
Withstands pressure up to 20 bar (290 psi)
Dynamic sealing lip ensures continuous contact during shaft rotation
70 Shore A hardness for ideal flexibility and sealing strength
Designed for easy installation and precise fitment into ZF marine transmission housings
Reduces maintenance costs and prolongs component service life

Specifications:

Part Number	ZF 634309631
Material	Nitrile Butadiene Rubber (NBR)
Inner Diameter	50 mm
Outer Diameter	68 mm
Thickness	10 mm
Temperature Range	–30°C to +120°C (–22°F to +248°F)
Pressure Rating	Up to 20 bar (290 psi)
Hardness	70 Shore A
Seal Type	Radial shaft seal with dynamic lip
Oil & Fuel Resistance	Excellent
Saltwater Resistance	High
Compression Set Resistance	Excellent long-term resilience
Application	ZF marine transmissions, hydraulic systems, rotating machinery
Installation	Simple press-fit, no special tools required

Application & Compatibility:

The ZF 634309631 Shaft Seal is specifically designed for ZF marine transmission systems but is also suitable for other rotating shaft applications in hydraulic and marine machinery. Its high resistance to oils and saltwater makes it particularly well-suited for use in both recreational and commercial vessels. The seal helps maintain optimal performance of gearboxes by effectively containing fluids and preventing contamination, reducing mechanical wear and extending equipment life.

Benefits:

Prevents fluid leakage and external contamination in rotating shaft systems
Ensures consistent sealing in harsh marine conditions
Compatible with transmission oils, fuels, and lubricants
Reduces equipment downtime and maintenance requirements
Improves transmission efficiency by maintaining internal fluid pressure
Ideal for use in ZF marine transmission systems and related applications
Cost-effective solution with long operational lifespan