The Bomag 05801172 Square Ring is a genuine OEM sealing component designed for the BW 120 AD tandem roller. Sourced directly from Bomag, this square ring meets the original design specification, ensuring a proper seal where it counts. This part is the correct replacement for BW 120 AD tandem rollers and installs directly without modification to the host assembly.
Key Features
- OEM Sealing Integrity — manufactured to Bomag's original material and dimensional specification, delivering the compression and chemical resistance required of a hydraulic or fluid-circuit sealing ring
- Direct-Fit Replacement — engineered to the same cross-section and durometer as the original, so this square ring seats correctly in its groove without adaptation
- Confirmed Fitment — compatible with the BW 120 AD tandem roller, giving you confidence you're ordering the right part for your machine
- Leak Prevention — a correctly seated square ring maintains fluid containment in the system; a worn or damaged ring leads to seeping or active leaks that can compromise hydraulic pressure and overall machine performance
- Genuine Bomag Part — part number 05801172 is an authentic Bomag component, not a substitute, so material traceability and fit accuracy are assured
A square ring is a sealing element used in hydraulic systems, fluid passages, and mechanical assemblies to prevent leaks between mating surfaces or within bore grooves. Unlike a standard O-ring, its flat-sided profile resists rolling and twisting under pressure, maintaining a stable seal even through cycles of vibration and load — conditions common in tandem roller operation. When a square ring degrades or takes a set, fluid can bypass the seal, causing pressure loss, contamination, or external leakage that demands immediate attention to keep the machine running correctly.
Part Details
| Part Number | 05801172 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Square Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 120 AD | 00810019 |
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.
