Remove Protective Seals

Just prior to making the connection, remove the protective seals (A).
CAUTION: If for any reason you have to stop before making a connection, recap the tube, component or fitting.

Fig 1: Identifying Protective Seals (A)
Visually inspect the O-ring surface, the O-ring mating surface, the threads and the connection points. If a defective part is found, replace it.
The O-ring must sit square against the tube bead. If necessary, slide the O-ring into proper position with clean hands.

Fig 2: Identifying O-Ring's Proper Position Against Tube Bead