The Bomag 05903990 Nilos Ring is a genuine OEM sealing component designed for Bomag BC 972 RB-3, BC 972 RB-4, BC 1172 RB-3, and BC 1172 RB-4 refuse and landfill compactors. Sourced directly from Bomag, this ring meets the exact dimensional and material standards required for correct bearing protection on these machines. Choosing a genuine OEM part ensures the sealing interface performs exactly as the bearing assembly demands, keeping contamination out and lubricant in under the punishing conditions of landfill compaction work.
Key Features
- Genuine OEM Sealing Integrity — manufactured to Bomag's precise dimensional tolerances, ensuring full metal-to-bearing contact and consistent axial sealing performance from day one
- Drop-In Bearing Replacement — this Nilos Ring seats directly against the bearing face with no rework or shimming, maintaining the correct installation geometry of the original assembly
- Confirmed Fitment — verified for BC 972 RB-3, BC 972 RB-4, BC 1172 RB-3, and BC 1172 RB-4 refuse and landfill compactors using part number 05903990
- Contamination Defense in Harsh Conditions — landfill compactors operate in some of the most abrasive and debris-laden environments in heavy equipment; a correctly fitted Nilos Ring shields the bearing race from ingress that accelerates wear
- Extended Bearing Service Life — when this seal is worn or missing, bearing lubricant escapes and abrasive material enters, causing premature bearing failure; replacing it on schedule protects a significantly more expensive assembly
A Nilos Ring is a pressed-metal axial sealing ring that fits flush against the face of a roller bearing, forming a labyrinth-style barrier between the bearing's interior and the surrounding environment. Its primary job is to retain grease within the bearing while blocking dust, dirt, moisture, and debris from reaching the rolling elements and raceways. When a Nilos Ring degrades, cracks, or is lost during service, the bearing becomes vulnerable to rapid contamination-driven wear — often resulting in costly bearing replacement and unplanned machine downtime on the compaction face.
Part Details
| Part Number | 05903990 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Nilos Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Refuse / Landfill Compactor | BC 1172 RB-3 | 00818153 |
| 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.
