Bomag 31780443 Sealing Ring

The Bomag 31780443 Sealing Ring is a genuine OEM component designed for a wide range of Bomag tandem rollers, single drum rollers, and pneumatic tyred rollers. Sourced directly from Bomag, this sealing ring delivers an exact match to the original part, ensuring proper fit and function across every compatible machine. This genuine OEM part is confirmed to fit models including the BW 184 AD, BW 180 AD, BW 184 AD-2, and BW 184 AD-2 AM tandem rollers; the BW 177 D-3, BW 177 DH-3, BW 177 PDH-3, BW 178 D-3, BW 212 D-3, BW 213 D-3, BW 213 DH-3 USA, BW 213 PDH-3, BW 213 PDH-3 USA single drum rollers, and the C 850 C single drum roller; as well as the BW 24 R and C 560 B pneumatic tyred rollers. When it comes to maintaining fluid integrity and mechanical protection in demanding compaction equipment, fitting the correct sealing ring matters — part number 31780443 is the right choice.

Key Features

• Genuine OEM Sealing Material — manufactured to Bomag's original compound and dimensional specifications, ensuring the ring seats, compresses, and seals exactly as intended for rotary and hydraulic applications on compaction equipment
• Direct Drop-In Replacement — engineered to match the original profile and cross-section of part number 31780443, slipping into place without rework or adaptation during service
• Broad Roller Compatibility — fits Bomag tandem rollers including the BW 184 AD and BW 180 AD series, single drum rollers including the BW 213 D-3 and BW 177 PDH-3 families, and pneumatic tyred rollers including the BW 24 R and C 560 B
• Fluid Containment Integrity — a correctly seated sealing ring prevents hydraulic fluid or lubricant loss that would otherwise lead to overheating, accelerated wear on adjacent components, and loss of compaction force
• Leak Prevention in the Field — a worn or damaged sealing ring is a leading cause of unexpected fluid loss on ride-on rollers; replacing it at the first sign of seepage protects drums, drives, and hydraulic circuits from secondary damage

A sealing ring forms a pressure-tight barrier between mating surfaces or rotating components, preventing hydraulic fluid, gear oil, or lubricant from escaping the system. On heavy compaction rollers like the BW 213 and BW 177 series, these rings are typically found in drum drives, hydraulic circuits, and gearbox assemblies where maintaining correct fluid levels is critical to consistent compaction output. When a sealing ring deteriorates — through heat cycling, pressure fatigue, or age — fluid loss begins, and the resulting contamination and pressure drop can cause premature failure of far more expensive surrounding components.

Part Details

Compatibility & Fitment

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.