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Graco 188257 Piston Seal

The Graco 188257 Piston Seal is an OEM piston seal that ensures optimal sealing, maintaining consistent pressure and preventing fluid leakage in compatible pumps.

  • OEM piston seal
  • Prevents leakage
  • Maintains pump efficiency
  • Fits compatible Graco pumps

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Graco 188257 Piston Seal – OEM High-Performance Seal

Compatible Machines

  • Graco high-pressure spray pumps
  • Graco industrial fluid pumps
  • Graco professional piston assemblies

The Graco 188257 Piston Seal is designed for reliable piston sealing, minimizing internal bypass and ensuring smooth, consistent pump performance.

Part Number 188257
Description Piston seal for fluid control
Function Prevents fluid leakage and maintains pressure
Application High-pressure piston pumps

Key Features

  • OEM replacement seal
  • Ensures consistent pressure
  • Reduces internal leakage
  • Durable for extended use

Installation & Usage Tips

  • Remove old seal completely before installation.
  • Lubricate lightly for smooth seating.
  • Check piston and housing for wear.
  • Test pump pressure after installation.

Frequently Asked Questions

Yes, it is a genuine OEM Graco piston seal.

Replace when fluid leakage or pressure drop is noticed.

Reuse is not recommended; always install a new OEM seal for proper function.

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