high temperature thread sealing compound 1

[asimpson]

I need to seal a 1/2 BSP thread for a steam application. Material is steel. Temperatures will rise above 500C. Pressures up to 6 bar.

I am sure welding is best however I need a short term solution to keep me going.

Thanks

 

[moltenmetal]

http://www.xpando.com/

Whether it works or not will depend on how skillfully you apply it. Don't overtighten- leave enough in the joint to expand and seal.

You can try grafoil tape as well.

http://www.egcflexiblegraphitesolutions.com/html/

That'll work for SMALL fittings under MODEST pressures.

That assumes that the thread is BSPT taper, not BSPP parallel. In the later case, you need a gasket.