Exhaust collar fitting

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Hello, I've read the technical section on here about the exhaust collar tightening procedure and can't see any mention of the use of anti-seize substances so I guess it's best not to?
I'm using the brass / bronze type collars.

I've read elsewhere about the use of milk of magnesia being used as anti-seize in industries where fixings are exposed to high temperatures.

Slather with Copaslip or…

Slather with Copaslip or similar. Tighten and tighten again when hot with engine running (vibration helps thing along) using the proper wrench - do not hit with hammer and punch. Then wire-up if possible or use standard lock tabs.

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Thanks Stan, I thought…

Thanks Stan, I thought Copaslip might ooze and dribble out with the heat but there's no better guide than the voice of experience.
I've got adjustable and fixed C spanners, the good compression washers and lock tab washers ready to go.

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Wipe off the excess. But yes…

Wipe off the excess. But yes, some grease might be blown over the head. Unsightly I suppose, although it goes eventually. There are nickel-based anti-seize greases that won't be as noticeable.

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Why Copaslip?

COPASLIP™ is a high-performance compound specifically formulated to protect fasteners from seizure-induced by extremes of temperature, pressure, and corrosion. The semi-synthetic base fluid is reinforced with anti-oxidants, corrosion inhibitors, and ultra-pure copper particles to provide outstanding protection to threads and components.

COPASLIP™ minimises variations in frictional interference between threads, allowing accurate and consistent assembly. It also prevents galling and seizure during assembly and dismantling – even after long periods of exposure to high temperatures, corrosive environments or high pressure.

And I've seen some horrendous galling and seizure in fasteners of gas turbine engines where it has been forgotten.

Peter