
The Carlisle Binks 336359 by SPF Depot is the Delrin shaft guide used in the ST-1 air-purge spray foam gun. Installed at the gun head and handle junction, the guide supports proper alignment of the piston rod during gun operation.
Inspect the associated guide and housing O-rings during installation and replace damaged or worn seals as necessary. Confirm the part number using your ST-1 parts diagram before ordering.