Aftermarket GRACO® 25D143 Packing Set, piston L/PE (Non-OEM)

Manufacturer: Total Finishing Supplies

Part Number: 75429

Comparable OEM Part Number: 25D143

Description: Total Finishing's part # 20-3420 is a direct-fit replacement for the piston packing set on GRACO® Xtreme 220 L/PE airless spray equipment. This sealed packing assembly maintains pressure integrity within the pump's fluid chamber during high-volume coating application, ensuring consistent spray performance across commercial and industrial job sites.

Pump rebuild specialists and spray equipment service technicians rely on piston packing sets to restore worn or degraded sealing surfaces that develop during extended operation. Proper packing function prevents fluid bypass around the piston rod and internal leakage that compromises spray consistency and system pressure stability.

Common reasons for replacement:

• Visible fluid weeping or dripping from pump housing during spray cycles, indicating packing wear or compression loss
• Pressure fluctuations or inability to reach full PSI capacity, caused by internal fluid bypass around worn seals
• Reduced spray pattern control or inconsistent atomization when packing degradation allows pressure loss within the pump chamber
• Scheduled maintenance intervals on high-use equipment, where packing sets are replaced as part of preventive pump reconditioning

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

Comparable to GRACO® 25D-143