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Graco 110927 Packing O-Ring

Genuine **Graco 110927 Packing O‑Ring** – reliable seal for high-performance pumps and sprayers. Ideal for maintenance and replacement to prevent leaks and maintain pressure.

  • Material: Nitrile rubber (NBR)
  • Fits: GMAX II 3900, 5900, 7900 & Ultra Max II series
  • Function: Seals fluid passages in pump/manifold assemblies
  • OEM Part: Ensures correct fit and machine performance

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Graco 110927 Packing O‑Ring – Genuine Replacement Part

This is the genuine **Graco part number 110927 – a nitrile‑rubber **O‑Ring** (packing seal) designed for sealing fluid passages in high‑performance Graco equipment. It is referenced in Graco’s official parts breakdowns for piston‑pump units. :contentReference[oaicite:1]{index=1}

Compatible Machines

  • Graco GMAX II 3900 Cart Sprayer
  • Graco GMAX II 5900 Cart Sprayer
  • Graco GMAX II 7900 ProContractor Series Sprayer
  • Graco Ultra Max II Series (models 490‑595) and similar high‑output airless units

Use the part number 110927 when verifying in your machine’s parts list or manual to confirm compatibility.

Key Features & Benefits

Description Details
Material Nitrile rubber (NBR) – resilient seal for fluid applications
Purpose Provides a reliable seal within pump or manifold assemblies; prevents leaks and maintains pressure
Genuine OEM Part Manufactured by Graco, listed in their parts manual. :contentReference[oaicite:2]{index=2}
Maintenance Benefits Improves uptime, ensures correct performance, prolongs equipment life

Usage & Installation Notes

  • Always depressurise the machine before opening any fluid‑path components.
  • Inspect mating surfaces and seal grooves for wear or debris; clean thoroughly before installation.
  • Apply a thin film of compatible lubricant (e.g., the system fluid or recommended seal grease) to the O‑Ring during installation to aid seating and prevent twisting.
  • After installation, run the machine at nominal pressure and inspect for leaks before full production use.
  • Keep a spare on hand if your machine sees heavy use or frequent changeovers — inexpensive preventative part compared to downtime.

Frequently Asked Questions

Part 110927 is a specific nitrile O‑ring identified for a particular location in the pump or manifold assembly (see items “14a” in the manual). :contentReference[oaicite:3]{index=3} Other O‑rings in the same machine may differ in size, compound or function. Always use the correct part number.

Check your machine’s service or parts manual. Look up the parts list and locate part number 110927 (or reference the item number “14a” in the manual). If it appears, you are compatible. If your machine uses a different series or model, contact your authorised Graco distributor with your machine serial number to verify fit‑up.

While other O‑rings might physically fit, substitution is not recommended unless confirmed by technical data. Differences such as diameter, cross-section, material compound, and operating pressure rating can affect performance and safety. Always use a genuine OEM part where possible.

Note: This description is based on information from Graco’s official parts manuals and published lists. Always verify fit based on your machine’s model and serial number for best results.

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