The Bomag 05586177 O-Ring is a genuine OEM sealing component designed for Bomag BW 145, BW 177, and BW 179 series single drum rollers. Sourced directly from Bomag, this O-Ring matches the exact material composition, durometer rating, and dimensional profile of the original — ensuring a proper seal every time. This part covers an extensive range of -3, -4, -40, -50, and DHC-4 generation variants across the BW 145 and BW 177 families, as well as BW 179 models, so you can order with confidence that part number 05586177 is the correct fit for your machine. For operators running Bomag single drum rollers in demanding soil compaction applications, using a genuine OEM O-Ring is the straightforward way to restore a reliable seal.
Key Features
- Genuine OEM Sealing Material — manufactured to Bomag's original compound and hardness specifications, delivering the compression resistance and chemical compatibility required for hydraulic and fluid sealing in single drum roller applications
- Drop-In Replacement — dimensionally identical to the factory original, this O-Ring seats correctly in its groove without trimming, shimming, or adaptation
- Broad BW-Series Coverage — fits BW 145 D-3, BW 145 DH-3, BW 145 PDH-3, BW 177 D-3, BW 177 DH-3, BW 177 PDH-3, BW 177 D-4, BW 177 DH-4, BW 177 PDH-4, BW 177 DHC-4, BW 177 PDHC-4, BW 177 D-40, BW 177 DH-40, BW 177 PDH-40, BW 177 D-50, BW 177 DH-50, BW 177 PDH-50, BW 179 DH-4, BW 179 PDH-4, BW 179 DHC-4, BW 179 PDHC-4, and C 825 C single drum rollers, among others
- Leak Prevention — a correctly seated O-Ring maintains system pressure and keeps fluid where it belongs; a worn or damaged O-Ring leads to fluid weeping, contamination ingress, and progressive component damage in the surrounding assembly
- Fluid and Temperature Resistance — engineered to withstand the hydraulic fluid exposure and operating temperature cycles typical of heavy compaction equipment, resisting swelling, cracking, and set over time
An O-Ring is a precision loop seal used throughout hydraulic systems, fluid circuits, and mechanical assemblies to prevent leakage between mating surfaces or around moving shafts and fittings. In a single drum roller like the BW 145 or BW 177, O-Rings appear at pump connections, valve bodies, motor ports, and other critical junctions where maintaining a leak-free boundary is essential to sustained hydraulic performance. When an O-Ring degrades — through heat cycling, fluid incompatibility, or mechanical wear — the resulting leak can cause pressure loss, overheating, and damage to surrounding components, making timely replacement with a correct-specification part essential to keeping the machine operating at full capacity.
Part Details
| Part Number | 05586177 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Roller | BW 145 D-3 | 00817479, 00817637 |
| Single Drum Roller | BW 145 DH-3 | 00817481, 00817638 |
| Single Drum Roller | BW 145 PDH-3 | 00817483, 00817639 |
| Single Drum Roller | BW 177 D-3 | 00817503 |
| Single Drum Roller | BW 177 DH-3 | 00817505, 00817751 |
| Single Drum Roller | BW 177 DH 3 | 00817506 |
| Single Drum Roller | BW 177 PDH-3 | 00817508 |
| Single Drum Roller | BW145D 3 | 00817576, 00817927 |
| Single Drum Roller | BW145PDH 3 | 00817577 |
| Single Drum Roller | C 825 C | 00817578 |
| Single Drum Roller | BW177PDH 3 | 00817579 |
| Single Drum Roller | BW177DH-3 | 00817580 |
| Single Drum Roller | BW177D-3 | 00817586 |
| Single Drum Roller | BW 177 D-3 USA | 00817675 |
| Single Drum Roller | BW 177 DH-3 USA | 00817677 |
| Single Drum Roller | BW 177 PDH-3 USA | 00817679 |
| Single Drum Roller | BW 177 DH-4 | 00817761, 00817765, 00818453, 00818543, 00824037, 00824133 |
| Single Drum Roller | BW 177 PDH-4 | 00817763, 00818541 |
| Single Drum Roller | BW 179 DH-4 | 00817767, 00818545, 00824137 |
| Single Drum Roller | BW 179 PDH-4 | 00817769, 00818549, 00824139 |
| Single Drum Roller | BW177D 3 | 00817863 |
| Single Drum Roller | BW177DH 3 | 00817865 |
| Single Drum Roller | BW 145-DH-3 | 00817929 |
| Single Drum Roller | BW 179 DHC-4 | 00818033, 00818547 |
| Single Drum Roller | BW 177 DHC-4 | 00818035, 00818455 |
| Single Drum Roller | BW 177 D-40 | 00818165, 00818525 |
| Single Drum Roller | BW 177 DH-40 | 00818169 |
| Single Drum Roller | BW 177 PDH-40 | 00818171 |
| Single Drum Roller | BW 177 PDHC-4 | 00818283, 00818539 |
| Single Drum Roller | BW 179 PDHC-4 | 00818285 |
| Single Drum Roller | BW145DH 40 | 00818323, 00818939, 00818941 |
| Single Drum Roller | BW 145 DH 40 BW 145 DH 4 | 00818325 |
| Single Drum Roller | BW 145 PDH 40 BW145 PDH 4 | 00818327 |
| Single Drum Roller | BW 177 D-4 | 00818451 |
| Single Drum Roller | BW177D 40 | 00818579 |
| Single Drum Roller | BW177PDH 40 | 00818585 |
| Single Drum Roller | BW145D 40 | 00818935, 00818937 |
| Single Drum Roller | BW145PDH 40 | 00818943 |
| Single Drum Roller | BW 177 D-50 | 00824087 |
| Single Drum Roller | BW 177 DH-50 | 00824089 |
| Single Drum Roller | BW 177 PDH-50 | 00824091 |
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.
