🚀 go-pugleaf

They make flexible teflon tubes-but I don't think that they would be as
scorch resitant as the silicone. I would suggest trying to in-situ
filled silicone. Use really high temp filler (like silica, alumina,
maybe some kind of phosphourous material.) This will probably scorch,
but the "crust" will be oxidation resistant and still probably serve
your purposes. 

Tony Marshall wrote:
> 
> We make a product that is inserted into a pipe near a weld.  The
> temperature can reach 1200 degrees celsius for short periods (5 or 10
> minutes) when the flame from the welding rod touches the inserted tube.
> The inserted tube has to be flexible so that it can be pulled around
> bends in the pipe.  We have unsuccesfully tried silicon rubber (it burnt
> - but only just) which suggest the temperature may not be so high.
> Perhaps 800 degrees celsius.
> 
> Is there a material available that would suit the above application?
> 
> Thanks and regards.
> --
> Tony Marshall

-- 

Brent D. Viers                 
Department of Chemistry         
Polymer Research Center         
Mail Location 0172              
University of Cincinnati        
Cincinnati, OH 45221-0172       
Telephones: 513-556-9291        
            513-556-9290        
Fax: 513-556-9239                
e-mail:viersbd@ucbeh.san.uc.edu