Graco 104093 Packing O-Ring
$14.60
Available to Order
The Graco 104093 Packing O-Ring is a genuine OEM Buna-N seal designed to prevent leaks and maintain pressure in displacement pump assemblies.
- Material: Buna-N (Nitrile) Rubber
- Function: Seals pump interfaces for consistent spray pressure
- Used In: Various Graco airless sprayers and pump assemblies
- OEM Part Number: 104093
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Fitment & Specifications
Compatible Machines (see notes below)
Listed below are popular Graco sprayers where users commonly replace this O-ring. Always confirm against your unit’s parts manual before ordering.
- Graco 190PC Express (verify pump variant)
- Graco 390PC
- Graco Ultra 395 PC Pro
- Graco Ultra Max II 490 PC
- Graco Ultra Max II 495 PC
- Graco Ultra Max II 595 PC
What this part is
The Graco 104093 Packing O-Ring is an OEM sealing ring used in select Graco displacement pump assemblies to maintain fluid pressure and prevent leaks between mating pump components. It is commonly specified as a Buna-N (nitrile) O-ring in Graco documentation.
Key Benefits
- OEM-grade seal to restore pump performance and reduce bypass/leaks.
- Buna-N (nitrile) construction suitable for typical architectural coatings.
- Pressure retention for consistent spray pattern and reduced wear on pump parts.
- Direct replacement part number: 104093.
Specifications
| Attribute | Detail |
|---|---|
| Part Number | 104093 |
| Part Type | Packing O-Ring (displacement pump seal) |
| Material | Buna-N (Nitrile) |
| Typical Location | Sealing interface within the pump (e.g., cylinder/suction tube threads or related mating surfaces) |
| Used On | Selected Graco piston/displacement pump modules (see compatible machines above) |
Replacement Tips
- Clean the gland and mating surfaces; avoid nicking the O-ring.
- Use a light, coating-compatible lubricant to ease installation.
- Inspect related wear parts (packings, rod, cylinder) while the pump is open.
- Verify torque on reassembled components per your sprayer’s service manual.
Frequently Asked Questions
Match your sprayer’s displacement pump parts breakdown to part 104093. If your pump BOM lists 104093, it’s the correct replacement. When in doubt, share your model & serial with support for a manual look-up.
Reduced pressure, paint leakage at the pump, pulsation, or inconsistent spray pattern often point to a worn or damaged Packing O-Ring. Replace promptly to protect other pump components.
Only if the size and material match OEM specs. Using the genuine Graco 104093 is recommended to ensure proper chemical compatibility and seal performance.
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