Graco 25D191 Repair Kit for PSTN PTFE/PE 220

Graco 25D191 PTFE/PE Piston Repair Kit Overview

Compatible Machines

This piston repair kit is intended for Graco lower pumps with the 220-size piston packing configuration.

• Graco Xtreme™ Lower Pumps – 220cc class
• Graco XP Proportioner Systems with 220cc fluid sections
• Industrial Graco airless sprayer systems using compatible 220-size lowers

Key Product Information

Product Description

The Graco 25D191 Kit, Repair, Piston, PTFE/PE (220) is an OEM piston seal kit used to rebuild 220-size piston assemblies in Graco lower pumps. PTFE and UHMWPE packings provide excellent chemical resistance, durability, and stable sealing performance in demanding spray and fluid handling applications.

Installing this kit restores proper sealing, reduces internal leakage, and maintains consistent spray pressure. Always verify 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 prior to installing packings
• Lubricate new packings as recommended in the service manual
• Use only the 220-size kit for this pump class to maintain sealing efficiency

Frequently Asked Questions