Aftermarket GRACO® 25D193 Packing Set, piston T/PE (Non-OEM)

Manufacturer: Total Finishing Supplies

Part Number: 75579

Comparable OEM Part Number: 25D193

Description: Total Finishing's part # 20-3444 is a direct-fit replacement piston package set designed for the Xtreme 290cc TFE/PE airless sprayer, engineered to restore full pump displacement and spray performance on this high-volume application platform.

Spray equipment technicians and professional contractors rely on piston package sets to address wear patterns that develop across the reciprocating sealing surfaces inside the pump cylinder. As elastomer components compress and abrade during thousands of spray cycles, loss of seal integrity triggers pressure drop, flow inconsistency, and uneven spray pattern distribution—symptoms that demand a complete component replacement rather than partial repair.

Common reasons for replacement:

• Elastomer seals compressed or worn thin, causing pressure loss and reduced flow rate
• Surface scoring or pitting on piston rod visible during pump inspection
• Fluid leakage past piston seals into the crankcase during operation
• Spray pattern degradation or inability to reach rated PSI on high-viscosity coatings

Manufactured to OEM-equivalent dimensions for proper fit and performance.

Comparable to GRACO® 25D-193