The GRACO 17A257 is a pump jam nut designed for use in GRACO electric airless sprayers and plural component sprayers. It is a critical hardware component that secures the pump assembly, ensuring proper function and safety. Material is not specified, but it is typically made from durable metal for longevity and reliability. Its intended use is to maintain the integrity of the pump assembly in high-pressure fluid handling equipment.

Key Features:

• Jam Nut
• Height: 0.3 in, Length: 3.2 in, Width: 2.85 in
• Used on multiple GRACO sprayers, including Reactor E-8p and E-15p Portable Plural Component Sprayers
• Secures pump assembly for reliable operation
• Designed for ease of maintenance and replacement
• Durable construction for long service life

Applications:
Used in GRACO electric airless sprayers and plural component sprayers for securing pump assemblies in high-pressure fluid handling applications, such as spraying polyurethane foams and polyurea joint-fill materials.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, function, and safety, and helps maintain equipment warranty.
• Always verify fitment with your specific sprayer model before installation
• Follow all safety instructions and torque specifications as outlined in the equipment manual
• Inspect the jam nut and mating surfaces for wear or damage before installation
• Regularly inspect the jam nut for tightness and signs of wear
• Replace the jam nut if it shows signs of deformation or damage
• Use only genuine GRACO replacement parts for repairs