Bomag 05740856 O-Ring

The Bomag 05740856 O-Ring is a genuine OEM sealing component designed for Bomag tandem rollers across multiple series, including the BW 100 AD-4, BW 100 AC-4, BW 120 AD-4, BW 120 AC-4, BW 125 AD-4, BW 125 AC-4, BW 141 AD-50, BW 151 AD-50, BW 151 AC-50, BW 161 AD-5, BW 161 AC-5, BW 161 ADO-5, BW 170 AP AM, BW 174 AP, BW 174 ACP, BW 174 ACP-AM, BW 174 AP-AM, BW 174 AP-4, BW 174 AP-4 AM, BW 174 AP-4 AM PB, BW 174 AP-4 PB, BW 174 AP-4i, BW 174 AP-4i AM, BW 174 APO-4i, BW 174 ACP 4I AM, BW 190 AD-5, BW 190 ADO-5, and BW 202 AD-5. Sourced directly from Bomag, this O-Ring matches the original manufacturer's material and dimensional specifications for a drop-in replacement. Keeping the correct seal in place is essential for maintaining hydraulic or fluid system integrity on these tandem rollers, and part number 05740856 ensures you are installing the exact component Bomag engineered for these machines.

Key Features

• Genuine OEM Sealing Material — manufactured to Bomag's original compound and dimensional spec, ensuring the correct compression set and chemical resistance for hydraulic and fluid applications on tandem rollers
• Direct Drop-In Replacement — matches the original profile and cross-section exactly, so this O-Ring seats correctly in the designated groove without rework or shimming
• Broad Tandem Roller Coverage — fits BW 100, BW 120, BW 125, BW 141, BW 151, BW 161, BW 170, BW 174, BW 190, and BW 202 series tandem rollers, including AC, AD, ADO, AP, ACP, and AP-4i variants
• Leak Prevention — a properly seated O-Ring maintains a positive fluid or hydraulic seal; a worn or damaged seal leads to fluid loss, pressure drop, and accelerated wear of surrounding components
• Fluid System Integrity — correct sealing keeps hydraulic pressure stable across the drum drive and compaction systems, supporting consistent asphalt compaction performance on the jobsite

An O-Ring is a circular elastomeric seal that sits within a machined groove between two mating surfaces or components, creating a pressure-tight barrier that prevents fluid or hydraulic oil from escaping. On Bomag tandem rollers, O-Rings are used throughout the hydraulic drive, vibratory, and fluid systems to maintain operating pressure and prevent contamination. When an O-Ring hardens, cracks, or becomes deformed with age or heat exposure, it loses its sealing ability — resulting in fluid leaks, pressure loss, and potential damage to pumps, motors, and other downstream 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.