Wacker Neuson 5000029781 Shaft Seal 12 X 28 X 7 2B

The Wacker Neuson Shaft Seal 12 X 28 X 7 2B is a genuine OEM component designed for the A5000, L5000, M1500, M2500, and H35 series internal concrete vibrator power units and vibrator heads. As a direct Wacker Neuson OEM part, the is manufactured to the exact dimensional and material standards specified for these units, ensuring a proper sealing interface at the shaft. This seal fits a broad range of models across the IRFU-compatible vibrator line, including ISO and ANSI configurations, making it a versatile service part for contractors and rental fleets running Wacker Neuson internal vibration equipment.

Key Features

• Precision Dimensional Spec: — 12 x 28 x 7 mm profile with 2B lip geometry matches the exact shaft and bore tolerances of the A5000, L5000, M1500, and M2500 power units.
• Genuine OEM Sealing Material: — Sourced directly from Wacker Neuson, this seal uses the OEM-specified elastomer compound rated for the lubrication fluids and rotational speeds found inside these vibrator drive assemblies.
• Drop-In Shaft Replacement: — Engineered to seat directly into the existing housing bore without machining or adaptation, restoring the original sealed interface around the drive shaft.
• Broad Model Coverage: — Fits A5000/160, A5000/160B, L5000/225, M1500/120, M1500/230, M2500/120, M2500/230, H35, and H35S units in both ISO and ANSI configurations.
• Prevents Lubricant Loss and Contamination: — A worn or failed shaft seal allows internal lubricant to escape and moisture or debris to enter the drive housing, leading to accelerated bearing wear and vibrator head failure.
• Verified OEM Part Number: — Cross-reference 5000029781 against your machine's serial number and parts manual before ordering to confirm the correct fit for your specific unit variant.

A shaft seal is a precision ring seated around a rotating shaft where it exits a housing, creating a barrier that keeps lubricating oil or grease inside the assembly while blocking water, concrete slurry, and fine particulate from entering. In internal concrete vibrators, the drive shaft rotates at high speed to transmit eccentric vibration energy down to the vibrator head, and the shaft seal is the primary line of defense protecting the internal bearings and gear surfaces from contamination. When this seal deteriorates — typically through heat cycling, abrasion, or age — lubricant weeps out of the housing and the drive components run dry, resulting in premature bearing failure and loss of vibration output.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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