GRACO Seat, Piston, SST - (SKU: 189439)The GRACO 189439 Seat, Piston, SST is a stainless steel piston seat component designed for use in GRACO displacement pumps. It serves as a critical sealing and guiding element within the pump assembly, ensuring reliable operation and fluid containment. Key Features: Piston Seat Stainless Steel (SST) GRACO displacement pumps (specific models not listed in available data) Durable stainless steel construction for longevity Critical sealing function

Designed for side placement on TexSpray Mark V sprayers

making it suitable for handling a wide range of fluids while ensuring durability and compliance with food-grade standards

designed for accurate measurement and dispensing of compatible fluids such as antifreeze

1" NPT ports

enclosure plug 11-13 ft

Using genuine GRACO labels ensures correct identification and safe operation of flow control components

and construction applications where precise material mixing is required

supports NLGI #000 to NLGI #2 greases and oils

specifically for models such as LineLazer IV 3900

Regularly inspect and maintain high-wear components for consistent performance

Tee fitting with thermometer

Its primary function is to provide protection and maintain the integrity of the air valve system