Graco 25D193 Piston Repair Kit PTFE/PE (290)

Graco 25D193 PTFE/PE Piston Repair Kit Overview

Compatible Machines

This piston repair kit is designed for Graco lower pumps with the 290-size piston packing configuration.

• Graco Xtreme™ Lower Pumps – 290cc class
• Graco XP Proportioner Systems with 290cc fluid sections
• Industrial Graco airless sprayer systems using compatible 290-size lowers

Key Product Information

Product Description

The Graco 25D193 Kit, Repair, Piston, PTFE/PE (290) is an OEM piston seal kit used to rebuild 290-size piston assemblies in Graco lower pumps. PTFE and UHMWPE packings are selected for durability, chemical resistance, and reliable sealing performance in demanding industrial spray applications.

Using this kit restores proper sealing, minimizes internal leakage, and maintains consistent spray pressure. Always confirm your pump lower size and model before installation to ensure correct fitment.

Maintenance Recommendations

• Replace during scheduled lower pump rebuilds
• Inspect piston rod and cylinder for wear before installing new packings
• Lubricate packings as recommended in the pump service manual
• Use only the 290-size kit for proper sealing and performance

Frequently Asked Questions