GRACO Priming Piston (6-1/2” Diameter) - (SKU: 178090) Check for proper fit and

Check for proper fit and secure locking before operation

Self-adjusting

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GRACO Priming Piston (6-1/2” Diameter) - (SKU: 178090) Check for proper fit andThe GRACO 178090 Priming Piston is a critical component designed for use in GRACO oil and grease pumps. It is typically constructed from durable materials such as steel, brass, or aluminum, and is engineered to facilitate the priming process within the pump, ensuring efficient fluid intake and reliable operation. Key Features: Priming Piston 6 1 2 (165. 1 mm) Diameter Steel, brass, aluminum, acetal, nitrile rubber, polyurethane (wetted parts in