GRACO Piston, 11.580" Length, 0.194" Diameter, Nylon, Heavy Duty - (SKU: 01/0055-1U/89) but GRACO kits typically use

but GRACO kits typically use robust

Diaphragm Pump Service Kit

and is intended to maintain or restore pump performance

5/16 inch (diameter)

GRACO Piston, 11.580" Length, 0.194" Diameter, Nylon, Heavy Duty - (SKU: 01/0055-1U/89) but GRACO kits typically useThis is a heavy duty nylon piston designed for use in GRACO equipment. It is engineered to provide reliable movement and sealing within compatible GRACO systems, typically used in fluid handling or spray equipment. Key Features: Piston 11. 580" length, 0. 194" diameter Nylon Heavy duty construction for durability Engineered for reliable operation in demanding environments Ease of maintenance (if compatible with standard GRACO service procedures)