Bomag 05742074 O-Ring

The Bomag 05742074 O-Ring is a genuine OEM sealing component designed for a wide range of Bomag tandem rollers, single drum rollers, pneumatic tyred rollers, and pavers. Sourced directly from Bomag, this O-Ring meets the exact material and dimensional specifications required to maintain leak-free operation across every compatible machine. Confirmed fitment covers models including the BW 141 AD-5, BW 151 AD-5, BW 154 AD-5, BW 161 AD-5, BW 161 AC-5, BW 190 AD-5, BW 202 AD-5, BW 174 AP-4i, BW 145 D-5, BW 177 D-5, BW 177 DH-5, BW 11 RH-5, BF 300 C-2 S340-2 TV, BF 300 P-2 S340-2 TV, and additional BW and BF series variants. Using part number 05742074 ensures the correct seal geometry and compound grade for the specific joint or port it serves.

Key Features

• Genuine OEM Sealing Material — manufactured to Bomag's exact compound and durometer specification, delivering consistent compression set and chemical resistance where inferior seals fail prematurely
• Exact Dimensional Fit — the O-Ring seats precisely in its groove without trimming, stretching, or shimming, so installation is straightforward and the seal seats fully on the first attempt
• Broad Cross-Model Coverage — fits Bomag tandem rollers including the BW 141 AD-5, BW 151 AD-5, BW 161 AD-5, BW 190 AD-5, and BW 202 AD-5; single drum rollers including the BW 145 D-5, BW 145 DH-5, BW 177 D-5, and BW 177 DH-5; the BW 11 RH-5 pneumatic tyred roller; and BF 300 series pavers
• Leak Prevention That Protects Core Systems — a correctly seated O-Ring maintains hydraulic or fluid pressure at the joint it seals; a cracked or extruded seal leads to fluid loss, pressure drop, and accelerated wear on surrounding components
• Fluid and Temperature Resistance — the OEM compound is selected to withstand the operating fluids and temperature cycles specific to Bomag compaction and paving equipment, resisting swelling and hardening over time

An O-Ring is a circular elastomeric seal installed in a machined groove at a joint, port, or fitting to prevent fluid — typically hydraulic oil, coolant, or fuel — from escaping the system. When the mating surfaces are assembled and torqued, the O-Ring compresses against both walls of its groove and forms a positive, pressure-rated barrier. Over time, heat cycling, pressure spikes, and exposure to hydraulic fluid cause the elastomer to harden, crack, or flatten, which allows fluid to bypass the seal. On compaction equipment and pavers operating under continuous vibration and load, even a minor seal leak can escalate quickly — dropping system pressure, contaminating surrounding components, and ultimately causing unplanned stops. Replacing a worn O-Ring with the correct OEM part restores the integrity of the sealed joint and prevents the cascade of damage that follows from unchecked fluid loss.

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.