Greetings
From personal experience I've never managed to find anything BEFORE hoppin' into the DP above the quality of 140, however once you're in the DP there are several places where there are high quality components (randomized) that goes well beyond 140.
I like to believe based on 7 playthroughs of the entire game that you'll not find any crafting components above 140 prior entering the DP, although I will admit that I did manage to get my hands on a plasma core of 144 which I bought from the Tchort investigation department but that probably was a 'once off' when you consider that when merchants 'refresh' their inventory then it's completely random what will be up for purchase.
Who knows maybe if you keep going them 'silvery circles' Core city, Oculus and the Tchort institute for 100 times aka 60-90 minutes a full round of 'refreshing' then perhaps you'll be able to get aluminum cloth at 130+ although I personally think that managing 120+ is easily going to get you through the DP alive, if not even a lower 'standard' of quality values like 100.
On the other hand you could wait to craft your 'final get-up' till you've at least looted the spots with the high quality components in the DP, I for one like to think that the secret spot there is in the 'shroom kingdom' will always give off 2 x random high quality rolls of cloth of 140-160, been a while since I went there but I do believe it was 160 every time but I could be wrong.
Lastly aluminum cloth isn't 'too important' to get the highest quality for, after all you'll become immune to "burning your feet" even if that roll of aluminum cloth was at quality 1, beyond that it's merely a question of resistance towards 'fiery' sources aka incendiary bolts, incendiary grenades, PSI powers or plasma projectiles.
