Graco 158378 Packing O-Ring
$72.00
In Stock
The Graco 158378 Packing O-Ring is a genuine OEM seal for air motors and pump assemblies, preventing leaks and maintaining proper internal pressure for reliable operation.
- OEM Replacement – Fits President®, Bulldog, and Merkur series pumps
- Seals Effectively – Prevents air or fluid leaks
- Durable Material – Nitrile rubber for long-lasting performance
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Graco 158378 Packing O-Ring Overview
The Graco 158378 Packing O-Ring is a genuine OEM sealing component used in Graco air motors and pump assemblies. It prevents air or fluid leaks and maintains proper internal pressure for smooth operation.
Compatible Machines
This O-Ring fits the following Graco equipment:
- Graco President® Air Motors – various models requiring internal sealing O-Rings
- Graco Bulldog Sprayers – for pump/air motor sealing applications
- Graco Merkur Sprayers – internal O-Ring sealing in pumps
- Other Graco Fluid Handling Equipment – models that specify part 158378 in service manuals
Key Features
- OEM Quality: Genuine Graco part for reliable performance
- Sealing Efficiency: Prevents leaks and maintains air motor pressure
- Durable Material: Nitrile rubber construction for long service life
- Direct Replacement: Matches original specifications for proper fit
Technical Details
| Specification | Details |
|---|---|
| Part Number | 158378 |
| Part Type | Packing O-Ring |
| Used In | Air Motor and Pump Assemblies of Graco Equipment |
| Manufacturer | Graco Inc. |
| Material | Nitrile Rubber |
Installation & Maintenance Tips
- Verify your pump or air motor model before ordering to ensure proper fit.
- Inspect mating surfaces for wear or damage before installing the O-Ring.
- Replace O-Rings during routine maintenance to prevent leaks or loss of pressure.
- Always use genuine Graco parts for reliable and safe operation.
Frequently Asked Questions
It seals critical interfaces in the air motor or pump to prevent air or fluid leaks and maintain proper internal pressure for smooth operation.
Compatible with Graco President® air motors, Bulldog and Merkur sprayers, and other Graco fluid-handling equipment that specify part 158378 in their service manuals.
Replace it if leaks develop, pressure drops, or during regular maintenance intervals to ensure proper sealing and pump performance.
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