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
Model Number: 34-40-4520
The Milwaukee 34-40-4520 is a genuine OEM O-Ring for use in compatible Milwaukee tools. O-rings are precision-molded elastomeric sealing rings with a circular cross-section that seat into a machined groove and are compressed between two mating surfaces — creating a reliable static or dynamic seal that prevents fluid, air, or lubricant from passing the sealed interface. They are used throughout Milwaukee tool assemblies in gearcase oil seals, pump seals, valve seats, cylinder seals, and hydraulic/pneumatic circuit seals. An O-ring that has hardened, cracked, been cut, or has permanently compressed beyond its elastic recovery can no longer form a proper seal and requires replacement to restore leakproof performance.
Using a genuine Milwaukee OEM O-ring ensures the correct inner diameter, cross-section diameter, and elastomer compound for the groove and fluid compatibility requirements of the interface it seals. Always verify your catalog number and serial number on Milwaukee's website before ordering to confirm this is the correct O-ring for your specific unit.
Features
- Genuine Milwaukee OEM O-ring for compatible Milwaukee tools
- Circular cross-section elastomeric ring seals between two mating surfaces under compression
- Used in gearcase seals, pump seals, valve seats, and hydraulic/pneumatic circuit seals
- Replacement restores leakproof sealing when original O-ring hardens, cracks, or permanently compresses
- Verify catalog number and serial number on Milwaukee's website before ordering
Specifications
- Type: O-Ring
- Material: Elastomeric Rubber Compound
- Application: Static and Dynamic Fluid, Air, and Lubricant Sealing
- Compatibility: Always verify part compatibility using your tool's model and serial number before ordering
Includes
- (1) Milwaukee 34-40-4520 O-Ring
