Here is the website description...( NO AFFILAIATION ) Anyone familiar with using this and applications ?

For years we've been working on a product to repair cracks, pits or holes in exhaust manifolds, tailpipes, mufflers, or other components subjected to high temperatures while in use. Because replacement parts are often difficult or impossible to find, there is a real need for this type of product in the marketplace. FIRE SEAL 2000™ is a single-component (no mixing required) ceramic and stainless steel-filled putty that is resistant to fuels, oils, and corrosives. After it is fully cured, it will withstand temperatures up to 2000° F. FIRE SEAL 2000™ may be applied to rough-surfaced or sandblasted steel, stainless steel, or cast iron.

Instructions: Use a putty knife, small trowel or spatula to apply. Curing: Let FIRE SEAL 2000™ dry for 16-24 hours. Begin final cure by idling engine for 10-15 minutes at a time. You may sand FIRE SEAL 2000™ after it is fully cured, using a file or medium grit sandpaper. Do not use any lubricants for machining, but always use a dust mask to avoid inhaling the sanding dust.

Tube with
2 one-ounce packets..........$17.50

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'87 924S
'81 280SEL

Sold ->

81 300SD -
93 300E w/ 3.2
85 300D-
79 300SD
82 300CD
83 300CD - CA
87 190E 5 spd
87 Porsche 924S

"..I'll take a simple "C" to "G" and feel brand new about it..."