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Graco 103414 Packing O-Ring

The Graco 103414 Packing O-Ring is a genuine OEM seal used in pump lowers and transfer pumps to prevent leaks and maintain proper fluid pressure.

  • Fits ProConnect® CS Pump Lower (273295)
  • Compatible with T1 2:1 Transfer Pump
  • Ensures reliable sealing and long service life
  • Durable elastomer construction

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Compatibility & Technical Details

Compatible Machines

  • ProConnect® CS Pump Lower (Model 273295) — used with T4 air motors and E1 electric motors.
  • T1 2:1 Transfer Pump — intake valve repair kits include the 103414 O-rings.

About Graco 103414 Packing O-Ring

The Graco 103414 is a genuine Packing O-Ring used in pump lower and transfer-pump assemblies to maintain a reliable fluid seal, prevent leaks, and support consistent pressure and flow. Choosing genuine Graco sealing components helps ensure proper fit, longevity, and performance.

Key Features & Benefits

  • OEM fit for designated Graco pump lowers and transfer pumps.
  • Leak control—helps maintain system pressure and spray consistency.
  • Durability—engineered for demanding coating and foam transfer environments.
  • Service friendly—straightforward replacement during routine maintenance.

Specifications

Part Number 103414
Item Type Packing O-Ring (seal component)
Function Seals fluid passages in pump lower/transfer-pump assemblies to prevent bypass and leakage.
Included Single O-ring (quantity may vary by kit—check kit contents if ordering as part of a repair set).
Typical Use Cases Maintenance of ProConnect® CS Pump Lower systems and T1 2:1 Transfer Pumps; plural-component, foam, polyurea, and coatings transfer.
Material Elastomer O-ring (exact compound may vary by application/kit; confirm with equipment manual if chemical compatibility is critical).

Installation & Maintenance Tips

  • Clean mating surfaces and inspect the old O-ring for cuts, nicks, flattening, or chemical damage.
  • Lightly lubricate with a Graco-approved lubricant (if specified) to aid seating and reduce startup wear.
  • Follow the torque and assembly order from your pump lower / transfer-pump manual.
  • Pressure-test after reassembly to confirm a proper seal before returning to service.

Frequently Asked Questions

Check your unit’s parts list or repair manual. If your assembly references ProConnect® CS Pump Lower (273295), T4 air motor / E1 electric motor configurations, or T1 2:1 Transfer Pump intake repair kits, the 103414 O-ring is typically applicable.

Loss of prime, fluctuating pressure, visible fluid leakage at the lower, or aeration in the fluid stream often indicate a worn or damaged O-ring. Inspect and replace during routine maintenance.

Use only Graco-recommended lubricants or those specified in your model’s manual to ensure material compatibility and proper sealing performance.

It’s commonly sold individually and also included in certain repair kits (e.g., intake valve repair kits). Review the product page or kit contents to confirm quantity before purchase.

Replacement intervals depend on hours of use, material abrasiveness, and maintenance practices. Inspect during scheduled service and replace at the first sign of wear or leakage.

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