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Graco 102413 U-Cup Packing

Graco 102413 Packing U-Cup — OEM U-cup seal for the pump’s fluid section; restores pressure, reduces leaks, and keeps the rod running smoothly.

  • Fits: Ultra 395/495/595; Ultra Max II 695/795/1095; Mark V/VII; select ST Max (verify pump version)
  • Type: U-cup packing (piston/rod seal)
  • Use: Prevents fluid bypass & maintains spray consistency
  • Install: Observe lip orientation; lubricate per Graco spec
  • OEM #: 102413

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U-Cup Seal for Graco Pump Fluid Sections

Compatible Machines

  • Graco Ultra 395, Ultra 495, Ultra 595
  • Graco Ultra Max II 695, 795, 1095
  • Graco Mark V, Mark VII contractor sprayers
  • Selected Graco ST Max series fluid sections (verify pump version)

Product Name

Graco 102413 Packing U-Cup — OEM U-cup style packing used in the fluid section of select Graco airless pumps to maintain high-pressure sealing, reduce fluid bypass, and keep the piston/rod running smoothly.

Key Benefits

  • OEM fit: Designed for Graco pump tolerances and materials.
  • Restores pressure by reducing rod/bore bypass and leakage.
  • Smoother operation and longer service life of piston/rod components.
  • Consistent spray pattern through proper fluid-side sealing.

Technical Specs

OEM Part Number 102413
Type Packing U-Cup (U-profile seal for piston/rod)
Application Area Fluid section / pump rod sealing (airless paint sprayers)
Function Prevents fluid bypass, maintains operating pressure, reduces wear
Compatibility Guidance Confirm against your pump/fluid-section assembly number in the sprayer manual

Installation & Care

  • Always relieve pressure and follow Graco safety procedures before disassembly.
  • Clean housing grooves and the rod; lightly lubricate packing as specified.
  • Observe lip orientation of the U-cup; torque per Graco spec.
  • Replace when you notice leaks, loss of pressure, or streaky spray pattern.

Frequently Asked Questions

Often yes; the Ultra 395 uses pump variants that specify this U-cup. Verify by your pump/fluid-section number in the manual to be certain before ordering.

Visible leakage at the rod, pressure drop, pulsation, or inconsistent spray fan. Glazed or flattened packing lips are also a sign of wear.

Yes — 102413 is an OEM Graco part number for a U-cup packing used in select fluid sections.

Use fluids within Graco’s recommendations. For aggressive solvents/abrasives, confirm the packing material grade specified for your pump to ensure chemical compatibility.

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