The Bomag 05901425 Backup Ring is a genuine OEM component designed for Bomag MPH-series and RS-series recyclers and stabilizers, including the MPH 121, MPH 122, MPH 122-2, MPH 125, MPH 600, MPH 600 3B/4i-PB, MPH 600 EU-FLEX, MPH 364-2, RS 360 TIER-4F, and RS 650. Sourced directly from Bomag, this backup ring matches the original equipment specification for a drop-in replacement with no guesswork on compatibility. Keeping hydraulic sealing assemblies intact is critical on heavy-duty recyclers and stabilizers, and this genuine OEM part ensures the sealing system performs exactly as Bomag intended across all covered models.
Key Features
- Genuine OEM Sealing Integrity — manufactured to Bomag's exact material grade and dimensional tolerances, ensuring the backup ring supports adjacent seals without extrusion under hydraulic pressure
- Direct-Fit Replacement — matches the original profile and sizing so this backup ring seats correctly within the hydraulic assembly without rework or adaptation
- Broad Recycler and Stabilizer Coverage — confirmed fit across the MPH 121, MPH 122, MPH 122-2, MPH 125, MPH 600, MPH 600 3B/4i-PB, MPH 600 EU-FLEX, MPH 364-2, RS 360 TIER-4F, and RS 650
- Hydraulic System Protection — a correctly installed backup ring prevents seal deformation and fluid bypass, maintaining consistent hydraulic pressure for rotor drive and machine function
- Verified Part Number Traceability — order with confidence using Bomag part number 05901425, the exact OEM reference for this application
A backup ring works alongside primary hydraulic seals to prevent them from extruding into the clearance gap between mating components under high pressure. On heavy recyclers and stabilizers like the MPH and RS series, hydraulic circuits operate under demanding loads, and a compromised backup ring allows the primary seal to deform, leading to fluid leakage and loss of hydraulic pressure. Replacing a worn or damaged backup ring restores the integrity of the sealing assembly and protects the broader hydraulic system from accelerated wear.
Part Details
| Part Number | 05901425 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Backup Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Recycler / Stabilizer | MPH 121 | 00817587 |
| Recycler / Stabilizer | MPH 122 | 00817595 |
| Recycler / Stabilizer | MPH 122-2 | 00818177, 00818727, 00818911, 00824987 |
| Recycler / Stabilizer | MPH 125 | 00818273, 00818681, 00818909 |
| Recycler / Stabilizer | MPH 600 | 00824097, 00824099 |
| Recycler / Stabilizer | MPH 600 3B/4i-PB | 00824645 |
| Recycler / Stabilizer | MPH 600 EU-FLEX | 00824751 |
| Recycler / Stabilizer | MPH 364-2 | 00824973 |
| Recycler / Stabilizer | RS 360 TIER-4F | 00825055 |
| Recycler / Stabilizer | RS 650 | 00825131 |
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.
