there seems to be a variety....aluminun, nickel, copper.

does it really matter what you use considering the small amount for each application?

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Ben
1987 190d 2.5Turbo

It depends on the pressure and heat.

I've used aluminum in high heat(turbo bolts) and it kind of melted into a thin solid layer around the threads. The bolts came out but they were pretty challenging.

Copper I haven't ever had trouble with, but it's only slightly less expensive than nickle so....

Nickle is my preferred go-to. It's worth every penny.

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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment

This web site covers a lot of info about anti-seize. It's from "Never Seez" which is owned by Bostik.

Never Seez Products Overview - Industrial Supply Group is a Distributor of the full line of Never-Seez products

Rgds,
Chris W.

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Objects in closer are mirror than they appear.