The GRACO 557191 Collar Piston is a small, precision-engineered component designed for use within GRACO industrial equipment, particularly in lubrication and fluid handling systems. Its material is not specified in available sources, but it is intended to function as a critical internal part, likely aiding in the movement or sealing of pistons within pumps or spray systems.

Key Features:

• Collar Piston
• Designed for use with GRACO industrial equipment; specific models not listed
• Compact size (0.1 x 0.85 x 1.05 inches)
• Lightweight (0.01 lbs)
• Likely engineered for reliability and ease of maintenance as a replacement part

Applications:
Used as a replacement or maintenance part in GRACO industrial lubrication, spray, or fluid handling systems.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of equipment.
• Always refer to the specific equipment manual for installation instructions.
• Ensure the system is depressurized and safe before replacing or installing the collar piston.
• Inspect the part for damage before installation.
• Use appropriate tools and follow GRACO’s recommended maintenance procedures.