Ensure optimal performance and leak-free operation with the genuine Graco 108876 Packing O‑Ring. Key features include:
The Graco 108876 Packing O‑Ring is a genuine OEM sealing component designed to maintain pressure integrity and prevent fluid bypass or leakage in the fluid‑section assemblies of Graco spray equipment.
When replacing packings, seals or O‑rings during maintenance of high‑pressure airless sprayers or fluid pumps, installing the correct part number ensures the seal geometry, material compatibility, and dimensional tolerances meet factory specifications.
Using the correct O‑Ring helps avoid pump performance issues such as slow priming, pressure drift, material leaks or finish‑quality problems.
The following machines are confirmed to use or be compatible with part number 108876. If your machine is not listed, please verify with the serial/parts diagram before ordering.
*Tip: If you do not find your machine on the list, locate your model’s parts diagram, match the packing O‑Ring call‑out to 108876, or contact your Graco distributor for confirmation.
Using genuine Graco parts ensures exact fit, correct material formulation, and retains warranty compliance. Many service manuals highlight that even minor dimensional or elastomer‑variations can lead to leaks or premature wear in high‑pressure spray systems. :contentReference[oaicite:1]{index=1} Avoiding generic or “universal” seals helps maintain optimal spray pattern, pressure control, and long‑term reliability.
| Step | Description |
|---|---|
| 1 | Relieve system pressure and lock the trigger. Disconnect power or air supply. |
| 2 | Disassemble the pump / packing nut area, and remove the old O‑ring. |
| 3 | Clean all metal faces and inspect for nicks or scoring. Replace damaged parts. |
| 4 | Apply a light film of recommended lubricant, install the new O‑ring, ensuring correct orientation. |
| 5 | Re‑assemble, torque gland nut to specification, prime the pump and check for dry external seal. |
Precision matters: as Graco’s parts manuals state — “Some o‑rings are close in size. Stack on bench to differentiate.” :contentReference[oaicite:2]{index=2} Replacing the packing O‑ring is a simple service item that can prevent costly pump failures, reduce downtime and keep spray results consistent.
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