The Bomag 05902471 Square Ring is a genuine OEM sealing component designed for BC 972 RB and BC 1172 RB series refuse and landfill compactors. Sourced directly from Bomag, this square ring delivers an exact dimensional match to the original, ensuring a proper hydraulic or fluid seal without modification. It is confirmed to fit the BC 972 RB-2, BC 972 RB-3, BC 972 RB-4, BC 1172 RB-2, BC 1172 RB-3, and BC 1172 RB-4 variants, covering multiple production generations of these heavy-duty compactors. When a worn or damaged seal is compromising system integrity, replacing it with the correct OEM part is the most direct path to restoring full operation.
Key Features
- Genuine OEM Sealing Integrity — manufactured to Bomag's exact material and dimensional specification, ensuring the square ring compresses and seals correctly under operating pressure
- Direct Drop-In Replacement — matches the original cross-section and profile, seating into the existing groove without rework or fitting adjustments
- Broad Generation Coverage — fits BC 972 RB-2, RB-3, and RB-4 as well as BC 1172 RB-2, RB-3, and RB-4 refuse and landfill compactors, spanning multiple build generations in a single part number
- Leak Prevention — a correctly seated square ring maintains fluid containment in hydraulic or fluid passages; a degraded ring leads to seepage, pressure loss, and accelerated wear on surrounding components
- Hydraulic System Safety — maintaining a sound fluid seal on heavy compactor systems prevents uncontrolled pressure loss that can affect steering, braking, or working attachment response
A square ring is a sealing element similar in function to an O-ring but with a flat, square cross-section that provides a larger contact area against the sealing surfaces. This profile resists rolling and twisting within the groove during pressure cycles, making it well suited to hydraulic circuits and fluid passages on heavy-duty equipment like landfill compactors. When a square ring cracks, hardens, or takes a permanent set with age and heat, it loses its ability to form a positive seal — leading to fluid leaks, pressure drop, and potential damage to adjacent components. Replacing a worn square ring promptly with the correct OEM part, such as part number 05902471, restores the seal and protects the broader hydraulic system.
Part Details
| Part Number | 05902471 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Square Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Refuse / Landfill Compactor | BC 1172 RB-3 | 00818153 |
| Refuse / Landfill Compactor | BC 972 RB-2 | 00818191, 00818701, 00818889 |
| Refuse / Landfill Compactor | BC 1172 RB-2 | 00818193, 00818703, 00818891 |
| Refuse / Landfill Compactor | BC 972 RB-3 | 00824085 |
| Refuse / Landfill Compactor | BC 972 RB-4 | 00824899 |
| Refuse / Landfill Compactor | BC 1172 RB-4 | 00824901 |
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.
