Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukees website please click here:
Milwaukee O-Ring 3/8 in. for M12 and M18 3/8 in. Impact Wrenches and Drivers
Model Number: 34-40-1885
The Milwaukee 34-40-1885 is a genuine OEM 3/8 in. Rubber O-Ring for Milwaukee M12 and M18 3/8 in. impact wrenches and drivers, compatible with models including the 2454-20, 2463-20, 2554-20, 2654-20, 2658-20, 2754-20, and 2758-20 among others — always verify by serial number. The O-ring is the small rubber sealing ring that sits in the groove of the impact wrench anvil beneath the friction ring. Together with the 3/8 in. friction ring (44-90-1050, sold separately), the O-ring maintains the friction ring's position in the anvil groove and ensures that sockets snap on securely and are retained correctly during impact driving operations. A worn, cracked, or missing O-ring allows the friction ring to shift or fall out of position, causing sockets to slip or disengage from the anvil during use. Replacing the O-ring and friction ring together restores proper socket retention on 3/8 in. Milwaukee impact wrenches and drivers.
To install, clean the anvil groove, slip the O-ring into the anvil groove, then seat the friction ring over it. The 3/8 in. friction ring 44-90-1050 is sold separately — check your tool's service diagram to confirm the correct friction ring part number for your specific model and serial number. Always verify your catalog number and serial number before ordering to confirm this is the correct O-ring for your specific unit.
Features
- Genuine Milwaukee OEM 3/8 in. rubber O-ring for M12 and M18 3/8 in. impact wrenches and drivers
- Seats in the anvil groove beneath the friction ring to maintain socket retention and prevent ring displacement
- Compatible with 2454-20, 2463-20, 2554-20, 2654-20, 2658-20, 2754-20, 2758-20, and other 3/8 in. models — verify by serial number
- Typically paired with 3/8 in. Friction Ring 44-90-1050 — sold separately
- Verify catalog number and serial number before ordering to confirm correct model compatibility
Specifications
- Type: O-Ring (Anvil Groove Seal)
- Material: Rubber
- Inside Diameter: 3/8 in.
- Compatible Tools: Milwaukee M12 and M18 3/8 in. Impact Wrenches and Drivers — verify by model and serial number
- Note: 3/8 in. Friction Ring 44-90-1050 sold separately
- Compatibility: Always verify part compatibility using your tool's model and serial number before ordering
Includes
- (1) Milwaukee 34-40-1885 O-Ring 3/8 in.
