Sealing aluminum

[berad001]

Is there a reason you'd seal aluminum after polishing it? I've had aluminum parts in my motor bay in which I polished over a year ago, and they still look like the day I finished them. I do wax them on a regular basis, but other than that, why seal them?

[customandsound]

zoop it or you can have them powder coated with super mirror clear 500+
but high grade carnuba wax works fine