Donut-Style mounting rings are a simple, yet effective mounting device that fits over the rim between the bead and rim flange, creating a seal. As the tire expands and the beads begin to seat, the mounting ring slides out over the rim, allowing the beads to fully seat.--Note: O.S.H.A. regulations require that service personnel use a clip-on air chuck with an inline inflator at a reccomended distance that keeps the employee out of the trajectory of the tire and rim. After beads are seated, put tire and rim into approved inflation cage and continue to inflate to prescribed air pressure.
