Birchmeier 50117001V O-Ring, Viton
For Flox, Iris, Senior, BCS. This is the o-ring that goes inside the Birchmeier adjustable nozzle (#28502598). This item is viton, which is heavier-duty and longer-lasting then the green rubber oring that comes with the new backpack. The price is for 10 o-rings. The o-ring is black in color and approximately 5/16" in diameter. Keep extras on hand for emergencies.