The Bomag 05546993 Piston Seal is a genuine OEM piston seal designed for BW 190 AD-4 AM and BW 203 AD-4 AM tandem rollers, including the BW 203 AD-4 AM EU-Flex variant. Sourced directly from Bomag, this seal meets the original engineering tolerances required to maintain hydraulic integrity in your compaction equipment. This piston seal is the correct OEM specification replacement when addressing hydraulic cylinder wear or fluid loss on these tandem roller models.
Key Features
- OEM Sealing Performance — manufactured to Bomag's original material and dimensional specifications, delivering the compression ratings and sealing characteristics needed in hydraulic cylinder applications
- Direct-Fit Replacement — engineered to seat correctly within the hydraulic cylinder bore of compatible tandem rollers, matching the original profile for proper installation
- Confirmed Fitment — verified for the BW 190 AD-4 AM, BW 203 AD-4 AM, and BW 203 AD-4 AM EU-Flex tandem rollers
- Hydraulic System Integrity — a correctly functioning piston seal maintains cylinder pressure and control responsiveness; a worn or failed seal leads to internal fluid bypass, loss of force, and inconsistent drum operation
- Genuine Bomag Part — part number 05546993 is an authentic Bomag component, ensuring traceability and confidence in specification accuracy
A piston seal is a critical sealing element inside a hydraulic cylinder, preventing hydraulic fluid from bypassing the piston as it strokes under pressure. This allows the cylinder to generate and hold the force needed to control machine functions — such as steering, articulation, or drum positioning — on tandem rollers. When the piston seal wears or fails, internal leakage reduces cylinder efficiency, resulting in sluggish response, loss of control force, and potential damage to other hydraulic components if left unaddressed.
Part Details
| Part Number | 05546993 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Piston Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 190 AD-4 AM | 00817825, 00818309, 00824021 |
| Tandem Roller | BW 203 AD-4 AM | 00818591, 00824019 |
| Tandem Roller | BW 203 AD-4 AM EU-Flex | 00824397 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
