Posted by casebro on Wednesday, August 18, 2004 at 11:01AM :
In Reply to: Re: Sealing washers posted by Keith in Washington on Wednesday, August 18, 2004 at 10:57AM :
Most nonferrous metals work opposite of steel. Anneal brass or copper by heating red hot and quenching, that ought to soften new copper til it seals. Usually,the older it gets, the harder, as heat cycles will harden it.