Mounts on end of exhaust pipe to keep vacuum pump from going backwards at shutdown.
for 2 or 3 inch inch exhaust pipe
Rubber Disk measures 4 3/4 inches O.D. (outside diameter)
67333
Assembled in USA
also available
67332 for 1.5 inch
67333 for 3 inch
67331 for 4 inch
02/2024
