Graco 15C939 O-Ring Packing

Graco 15C939 O‑Ring Packing – Detailed Overview

Product Description

The Graco 15C939 O‑Ring Packing is a genuine OEM sealing component designed to fit specific Graco equipment assemblies where reliable fluid or air sealing is required. This high‑precision O‑ring restores the original sealing integrity, helping prevent leaks and maintain consistent performance throughout high‑pressure texture or spray systems.

Key Features & Benefits

• OEM‑approved part number ensures correct fit and proper sealing performance
• High‑quality elastomer construction maintains durability under pressure cycles
• Prevents leaks and maintains system integrity, reducing downtime and maintenance costs
• Simple to install during routine maintenance or component overhaul of Graco machines
• Cost‑effective replacement item to keeping sealing performance up to factory standard

Technical Specifications

Applications & Practical Use

• Installed when servicing or rebuilding valve, pump or fluid modules to restore original leak‑free performance
• Used by contractors and maintenance personnel to maintain equipment reliability in spray or texture operations
• Ideal when the existing O‑ring shows signs of wear, flattening, cracking or leakage
• Helps ensure proper system sealing, preventing contamination, pressure loss or inefficient output

Maintenance & Replacement Tips

• Always depressurize and clean the assembly before replacing the O‑ring to avoid damage or mis‑installation
• Inspect the groove and sealing surface for damage—if these are worn, the new O‑ring may not seal correctly
• Lubricate the O‑ring lightly with suitable lubricant to assist installation and avoid pinching or twisting
• If leaks or pressure loss persist after replacement, inspect adjacent seals, seats and mating components for wear

Frequently Asked Questions