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Graco 102595 Packing O-Ring

Graco 102595 Packing O-Ring—OEM seal for the outlet check-valve. Single-use; replace whenever the valve is opened to restore prime and hold pressure.

  • Part #: 102595
  • Location: Outlet check-valve (fluid section)
  • Fits: Select e-Xtreme & King E60/E70 units using valves 127631 or 25C189
  • Tip: Do not reuse; install with proper lubrication and torque

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Overview & Fitment — Graco 102595 Packing O-Ring

Compatible Machines

The 102595 Packing O-Ring is used inside the outlet check-valve assembly on select Graco high-pressure / electric airless systems. Replace whenever the outlet check valve is disassembled (this O-ring is designed to be crushed and not reused).

  • Graco e-Xtreme™ Electric Airless Sprayers — models using outlet check-valve 127631 (3/4 in. M NPT) or 25C189 (1/2 in. M NPT).
  • Graco King™ Electric High-Pressure Sprayers (E60 / E70) — units equipped with the above outlet check-valve assemblies.

Key Specifications

OEM Part Number 102595
Description Packing, O-Ring (seal for outlet check-valve assembly)
Typical Location Outlet check valve in the fluid section (e.g., assemblies 127631 / 25C189).
Service Note When the outlet check valve is opened, replace this O-ring. It is designed to be crushed and not reused.
Used With Selected e-Xtreme and King E60/E70 models that use the above outlet check-valve assemblies.

What It Does

  • Maintains a pressure-tight seal at the outlet check-valve interface.
  • Prevents fluid bypass and loss of output pressure.
  • Supports prime/hold pressure stability in high-pressure airless systems.

Replacement & Installation Notes

  • Depressurize system fully before servicing.
  • Inspect the outlet check valve seat/ball and related parts; replace worn items together for best results.
  • Lightly lubricate per OEM guidance during assembly; torque check-valve hardware to spec in your model manual.
  • After reassembly, verify prime/pressure hold and check for leaks.

Frequently Asked Questions

Look up your sprayer’s serial-specific parts manual. If the outlet check-valve is 127631 or 25C189, it uses O-ring 102595. If your valve assembly shows a different O-ring part number, order that exact number instead.

Inside the outlet check-valve of the pump’s fluid section. It seals the check-valve housing/seat interface to maintain pressure and prevent fluid bypass.

No. This packing O-ring is single-use. Once compressed in service, it should be replaced whenever the outlet check valve is opened.

Clean mating surfaces, use the correct lubricant approved by Graco, apply the specified torque, and verify system prime/hold without seepage. Replace any damaged seat/ball components together with the O-ring.

  • Difficulty holding pressure or frequent cycling at idle
  • Leakage or wetness around the check-valve housing
  • Erratic flow, poor prime, or delayed pressure build

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