Fix for cut threads on my radiator bushing....

branimal

I was replacing the valve and cut the bushing threads slightly when cutting out the brass valve spud. I installed the new valve with Hercules Blue BLOCK sealant. When the heat came on it was leaking at the bushing.

Should I retry with more sealant and teflon tape? Or should I cut out the damaged bushing?

PC7060

Wrap the valve with a high quality teflon tape; as much as you feel comfortable with. Apply sealant over tape and install. Don’t be an afraid to tighten to German “gudentite” standard.

Not sure how much time the Hercules need to set (if any). I’ve used rector seal 5 in similar situation and prefer to let cure before applying pressure.

Grallert

Try @PC7060 's suggestion but be careful not to break the tabs inside the spud. If that fails you can try JB Weld on the inside of the bushing or just pie cut the bushing and snap it out and start over with a new bushing.

AdmiralYoda

A picture would help! But perhaps some JB Weld to fill in the cut threads. Clean the heck out of the threads and shmear some JB Weld in there, let it cure and tap/clean up the threads?

Then go a little overboard with the sealant and tape.

ethicalpaul

My slightly cut threads always held tight with blue monster tape and no dope

Robertw

Old school lamp wick and megalock was my go to in this situation

EBEBRATT-Ed

Depends on the size of the cut.

All the above solutions may work. Expando dope is another option you mix it with water and apply it. Most of the time the standard tricks work. If not cut the bushing out carefully.

delcrossv

Linen thread/ lampwick then teflon tape.

branimal

https://forum.heatinghelp.com/discussion/comment/1821427#Comment_1821427

Wrapped it with tape and sealant and torqued it on. Then let it sit overnight.

Just tested it and it's not leaking.

Thanks guys.