The Bomag 05586178 O-Ring is a genuine OEM sealing component designed for Bomag BW 177, BW 179, BW 145, and BW 124 series single drum rollers. Sourced directly from Bomag, this O-Ring matches the exact material grade, cross-section, and inside diameter of the original part — ensuring a proper seal without modification. This part covers an extensive range of generation-3, -4, and -5 variants across the BW 177 and BW 179 families, as well as BW 145 and BW 124 models, including PDH, DH, DHC, PDHC, BVC, and D configurations.
Key Features
- OEM Material Match — Manufactured to Bomag's elastomer compound and dimensional specification, delivering the compression and chemical resistance required for hydraulic and fluid system sealing in single drum roller applications.
- Direct Drop-In Replacement — Cross-section and diameter conform to the original groove geometry, so this O-Ring seats correctly without reworking the mating surfaces or housing bore.
- Broad BW-Series Coverage — Fits 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-5, BW 177 DH-5, BW 177 PDH-5, BW 177 BVC-5, BW 179 DH-4, BW 179 PDH-4, BW 179 DHC-4, BW 179 PDHC-4, BW 145 D-5, BW 145 DH-5, BW 145 PDH-5, BW 124 DH-5, BW 124 PDH-5, and related variants including USA and PL configurations.
- Leak Prevention at the Source — A correctly seated O-Ring maintains system pressure and prevents fluid ingress or egress at the sealing joint. A worn or damaged O-Ring leads to hydraulic fluid leaks, contamination, and potential system pressure loss that affects compaction performance.
- Genuine Bomag OEM Part — Supplied as an authentic Bomag replacement under part number 05586178, giving you confidence that the geometry, hardness, and compound meet the original design intent for these machines.
An O-Ring is a circular elastomeric seal that sits inside a machined groove between two mating surfaces or components, creating a pressure-tight barrier against fluid or gas leakage. In single drum rollers like the BW 177 and BW 179 series, O-Rings are found throughout hydraulic circuits, fluid reservoirs, pump and motor housings, and other sealed assemblies where maintaining system pressure is critical to drive and compaction function. When an O-Ring degrades — through heat cycling, chemical exposure, or compression set — it loses its ability to seal, leading to leaks that can escalate into broader hydraulic or mechanical failures if not addressed promptly.
Part Details
| Part Number | 05586178 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 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 | 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 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 | BW 177 D-4 | 00818451 |
| Single Drum Roller | BW177D 40 | 00818579 |
| Single Drum Roller | BW177PDH 40 | 00818585 |
| Single Drum Roller | BW 177 D-50 | 00824087 |
| Single Drum Roller | BW 177 DH-50 | 00824089 |
| Single Drum Roller | BW 177 PDH-50 | 00824091 |
| Single Drum Roller | BW 177 D-5 | 00824351, 00824913, 00824915, 00825433, 00825725, 00825839, 00826625, 00826773 |
| Single Drum Roller | BW 145 D-5 | 00824357, 00825003, 00825427, 00825837, 00826053, 00826623, 00826771 |
| Single Drum Roller | BW 145 DH-5 | 00824471, 00825721 |
| Single Drum Roller | BW 145 PDH-5 | 00824473, 00825723 |
| Single Drum Roller | BW 177 DH-5 | 00824475, 00824917, 00825435, 00825727 |
| Single Drum Roller | BW 177 PDH-5 | 00824477, 00825437, 00825729 |
| Single Drum Roller | BW 177BVC-5 | 00824479 |
| Single Drum Roller | BW 124 PDH-5 | 00825071, 00825625, 00825735 |
| Single Drum Roller | BW 124 DH-5 | 00825073, 00825623, 00825733 |
| Single Drum Roller | BW 177-5 | 00825731 |
| Single Drum Roller | BW 145 D-5 PL | 00827061, 00827069 |
| Single Drum Roller | BW 177 PDH-5 PL | 00827075 |
| Single Drum Roller | BW 177 DH-5 PL | 00827077, 00827377 |
| Single Drum Roller | BW 177 D-5 PL | 00827081, 00827083, 00827087, 00827375 |
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.
