The Husqvarna 740441000 O-Ring is a genuine OEM sealing component designed for the DM280, DMS280, and DM340 concrete core drills. As a direct Husqvarna OEM part, it meets the exact material and dimensional specifications required for a proper seal in these drill systems. This O-Ring is a verified replacement for DM280 and DMS280 drill motor configurations, as well as the DM340 drill motor, ensuring compatibility across this core drilling line. DHS Equipment supplies this part to help keep your core drill operating at full capacity.
Key Features
- Genuine OEM Sealing Material — manufactured to Husqvarna's exact compound and compression specifications, ensuring the correct seal profile for these drill motor assemblies
- Drop-In Replacement Fit — dimensioned to seat precisely in the original groove without trimming or adaptation, restoring the sealing surface as intended
- Broad Core Drill Compatibility — fits DM280, DMS280, and DM340 concrete core drills; cross-reference part number 740441000 against your parts diagram to confirm the correct position
- Prevents Fluid Loss and Contamination — a correctly seated O-Ring maintains internal pressure and keeps moisture and debris out of critical drill motor passages; a failed or deformed ring can lead to fluid bypass and accelerated internal wear
- Fluid System Integrity — replacing a worn O-Ring promptly is essential to maintaining safe hydraulic or coolant circuit pressure within the drill motor, preventing uncontrolled leaks during operation
An O-Ring forms a compressed seal between two mating surfaces inside the drill motor assembly, preventing fluid — whether hydraulic oil or water coolant — from leaking past the joint. In a concrete core drill like the DM280 or DM340, these seals are subjected to continuous pressure cycling, and a degraded or cracked O-Ring will allow fluid to bypass the seal, reducing system pressure and potentially causing damage to internal components. Replacing the O-Ring with the correct OEM part restores the integrity of the sealing circuit and allows the drill to maintain consistent operating pressure.
Part Details
| Part Number | 740441000 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Concrete Core Drill | DM280 |
| Concrete Core Drill | DMS280 |
| Concrete Core Drill | DM340 |
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.
