Best aluminum alloy for press fit rings and bent tabs

I'm engineering an aluminum light that uses press fit ring spacers to hold seals and components inside a high strength (6061-T6?) 1.5 thin wall (.0625") tube.
The spacer rings (unless there is a better way) would be aluminum tube, necked to appropriate diameter and pressed into place.
Also the light will have some folded and stamped hinges and a lid with a stamped bevel edge. The hinges would be under tension, so they could be a thinner gauge to allow easier bending.
What would the best commonly available alloys for such pressing and stamping?
Any other help or direction for such a product is appreciated.