[Gasification] rope seals for really sealing?

[jim mason]

do people think it possible to really get an air tight atm seal with
fiberglass or ceramic rope as the gasket?  most boiler doors can
tolerate a little tiny bit of leaking air, but at the base of a
gasifier any air you let in is going to burn some of your gas.  yes,
you can really tolerate a bit of this too, but ideally, we'd have
absolutely zero air in.

it seems difficult to do this with regular braided rope.  maybe
impregnating it with high temp grease is enough to make it seal.

what is the collected wisdom on door seals?

for reference, here's the basic different types of ropes available:
http://www.mcmaster.com/#bulb-seal-gaskets/=dspae9

j


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