The GRACO 220658 is a urethane piston seal replacement kit designed for use in 400 Series Glutton air-powered pumps. It is constructed from durable urethane material and is intended to restore or maintain the sealing performance of the pump’s piston assembly, ensuring reliable operation in demanding industrial fluid transfer applications.

Key Features:

• Piston Seal Replacement Kit
• 220658 (for 400 Series Glutton Pumps)
• Urethane
• GRACO 400 Series Glutton Pumps
• Durable urethane construction for long service life
• Designed for easy replacement and maintenance
• Restores sealing integrity in high-performance pumps

Applications:
Used in industrial fluid transfer applications, including handling catalyzed coatings, varnish, lacquer, high solid coatings, abrasive materials, solvent and waterborne materials, moisture-sensitive materials, and UV-cure coatings. Suitable for general finishing applications where open wet cups are not preferred.

Installation Notes:

• Using genuine GRACO replacement parts ensures optimal performance, reliability, and compatibility with GRACO equipment.
• Disassemble the pump as instructed in the GRACO manual for servicing the fluid piston and seal.
• Replace the o-ring in the groove of the retaining plate before installing the new piston seal.
• Install the retaining plate with the flat side facing the piston seal and secure with the provided screws and washers.
• Grease the outlet housing groove and set the nylon seal inside before reassembly.
• Apply a low-pressure burst of air to the air manifold to check for proper assembly and sealing.