Spectrum Premium Fuel Assembly

Does any one know what this is it looks like dust this is a Spectrum Premium Fuel Pump and assembly my fuel pump i think i only had it for 5 months the fuel pump is now bad.

And because its a Spectrum Premium Fuel Pump must i only use 93 premium fuel at the fuel pump or can i still use the 89 gas? and what is that thing next to the spring with the little hole in it?

https://i.postimg.cc/VdGf99jN/IMG-204.jpg (https://postimg.cc/VdGf99jN)

I'll venture a guess. The "dust" is probably just fuel that has turned to varnish. The hole I suspect just a "venting" hole.
The pump doesn't care what octane you use, just the motor does.

Thanks.