The GRACO 171594 Washer, Piston is a small, precision-engineered component designed for use within GRACO piston pumps, such as the 10:1 Fire-Ball 425 Pump. Its material is not explicitly specified in available documentation, but it is typically made from durable, wear-resistant materials suitable for high-pressure lubrication systems. The washer functions as a sealing or backup element for the piston assembly, ensuring reliable operation and preventing leakage in grease transfer applications.

Key Features:

• Washer, Piston
• SKU:. 171594; Dimensions: 0.15 x 1.55 x 1.55 in (approx.)
• Compatible with GRACO 10:1 Fire-Ball 425 Pump and similar piston pump models
• Precision fit for reliable sealing
• Designed for easy replacement and maintenance
• Supports high-pressure grease transfer operations

Applications:
Used in GRACO piston pumps for transferring non-corrosive and non-abrasive lubricants, such as grease, in industrial and maintenance settings.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the equipment. Non-genuine parts may compromise system integrity and safety.
• Always follow the equipment manual for correct installation sequence and torque specifications.
• Inspect the washer and surrounding components for wear or damage before installation.
• Ensure the pump is depressurized and isolated from the system before servicing.
• Replace the washer as part of regular maintenance or when signs of wear or leakage are observed.