Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukee's website please click here:
Milwaukee O-Ring
Model Number: 34-40-1375
The Milwaukee 34-40-1375 is a genuine OEM O-Ring, a rubber sealing ring used to provide an air-tight seal between connected parts inside the tool. An O-ring seats in a groove or between two mating components and compresses when the parts are assembled, forming a seal that keeps air, grease, or debris where it belongs, whether that is sealing a gearcase against grease loss and contamination, sealing an air passage, or providing controlled compression and spacing between two components such as a spindle lock body and a gearcase. Made of durable rubber, it is a common wear and service item: over time and heat cycling an O-ring can harden, flatten, crack, or take a set, and once it does it no longer seals or spaces correctly, which can lead to grease leakage, contamination, air loss, or play in the assembly it supports. Replacing it with the correct genuine Milwaukee OEM O-ring restores the proper seal and fit, since an O-ring of the wrong diameter or cross-section will not seal reliably.
Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, and because this O-ring is common sealing hardware that appears across many different Milwaukee tools, including sanders and polishers, angle grinders, circular saws, miter saws, demolition hammers, and other power tools, always verify your tool's serial number against the official Milwaukee service parts diagram before ordering to confirm this is the correct O-ring for the location you are servicing. Do not order by appearance, since O-rings that look similar can differ in diameter and cross-section, and the diagram is what identifies the correct part at each position. An O-ring that has been removed or distorted during disassembly should be replaced rather than reused, since a compressed or nicked ring will not seal. Refer to your tool's parts diagram to confirm the correct O-ring, its location, and the quantity your tool uses.
Features
- Genuine Milwaukee OEM service part, not an aftermarket substitute
- Rubber O-ring that provides an air-tight seal between connected parts
- Seals a gearcase, air passage, or provides compression and spacing between components
- Keeps grease in and contamination out of the assembly it seals
- Durable rubber construction for a reliable, lasting seal
- A common wear and service item that hardens or cracks over time
- Restores proper sealing and fit when the original is worn or distorted
- Standard sealing hardware used across many Milwaukee tools
- Fits sanders, grinders, circular and miter saws, demolition hammers, and more
- Manufactured to Milwaukee specification for correct diameter and cross-section
- Order by exact catalog number, since similar-looking O-rings differ
- Verify catalog number and serial number before ordering
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 34-40-1375
- Official Description: O-Ring
- Component Type: Rubber sealing ring
- Material: Rubber
- Function: Provides an air-tight seal, compression, and spacing between parts
- Primary Fitment: Standard hardware used across many Milwaukee tools - verify by model and serial number
- Also Referenced On: Sanders, grinders, circular and miter saws, demolition hammers, and more
- Parts Diagram Position: Verify the figure and bulletin number on Milwaukee's online parts lookup
- Quantity: Sold individually, quantity per tool varies by model
- Part Type: Genuine Milwaukee OEM Replacement Part
Includes
- (1) Milwaukee 34-40-1375 O-Ring
This O-ring is sold individually. The quantity your tool uses varies by model, so verify the required quantity and location on your tool's parts diagram and order accordingly. The components it seals and the surrounding parts are NOT included - refer to your tool's parts diagram for the correct part numbers. Always verify by serial number using Milwaukee's online parts lookup before ordering.
