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Graco 188626 Back-Up Washer

The Graco 188626 Washer Back-Up supports seals and packings by preventing extrusion under pressure.

  • OEM back-up washer
  • Improves seal stability
  • Designed for high-pressure use

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Graco 188626 Washer Back-Up for Seal Support and Stability

Compatible Machines

  • Graco pump seal and packing assemblies
  • Graco fluid control systems using back-up washers

The Graco 188626 Washer Back-Up is an OEM component designed to reinforce seals and packings by preventing deformation or extrusion under operating pressure. It helps extend seal life and maintain consistent system performance.

Key Features

  • OEM Graco back-up washer for exact fit
  • Supports seals in high-pressure applications
  • Reduces premature seal failure
  • Durable, dimensionally stable construction

Installation & Usage Tips

  • Install in the correct order relative to seals.
  • Ensure washer sits flat without distortion.
  • Replace during seal or packing service.
  • Do not reuse if warped or damaged.

Frequently Asked Questions

It supports seals and prevents them from extruding under pressure.

Yes, it is a genuine OEM Graco washer.

Yes, replacing it during seal service is recommended for best performance.

Yes, lack of proper support can lead to seal failure and leakage.

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