Dumb question. Replacing the petcock on the radiator. Do you use plumbers tape/putty on the threads?
What ever is handy. Most times just a snot of gasket sealer. Dang tape always rides up and gets in the tiny drain hole.
I don't like the tape. I used the white Permatex thread sealer on mine just last week and all is good.
Permatex is my choice as well- smells interesting as well.
Rector-seal, No. 4.
(Old Steam guy, no Teflon allowed around steam--the Teflon, if any is in the 'slipstream', travels and messes up the steam valves.)
My vote Permatex non-hardening #2 doesn’t seize!
If we add up all the suggestions and take the average answer, I'd say the cumulative answer is "use something".
I always thought this was plumber's tape...I guess modern materials has now included teflon tape, etc. as plumber's tape.
That is called "Hanger Strap", John.
Holy Tape, John, the Riddler has us again!!
You are probably right, Teflon Tape falls under Pipe Dope.
OH, guess we've been doped again. . . .
I use nothing
Guess I am too old...or live out West...but I was confused when I saw the title of this thread. Originally it was called *plumber's tape*..look it up.
I'm with John. Plumbers tape is galvanized steel with many holes, used to hang pipes under houses where the spiders reside. Teflon tape is what one wraps around threaded pipe joints.
I use pipe dope on the radiator petcock.
I thought "Plumber's Tape" was what a plumber put on his backside before he bent over to repair the drain in the kitchen.
I gotta admit, John. That was my first thought too. Must not be just a western thing.
I thought the item in the picture was called mechanics roll...
Eric, Never heard of "Mechanics Roll". Stuff sure is handy whatever it's called. Right up there with Duct Tape. Good for a hundred purposes.
If you live in Oregon it is called "Duck Tape".
Back to the original question: "Replacing the petcock on the radiator. Do you use plumbers tape/putty on the threads?"
I was taught that brass in steel or steel in brass, no tape or pipe dope needed.
As I stated, I like to use Rector Seal #4, I do not use teflon, just in case some gets loose in the oil and wrecks havoc on bearings, etc. However, any good plumber's sealer will work. Yes, brass/steel will usually not require sealer, but that's not a good reason to NOT use it, think of it as insurance and a help to the one who follows you and has to take it apart (and that might be you!)
Plumber's Tape, Mechanic's wire, and Duct (duck) Tape are all up at the top of the list of necessary items for "Jerry-rigging."
If the tap/die was done with an NPT thread system tool, it needs sealant or it will wick along the base line of the thread...
If the tap/die was done with an NPTF thread system tool, it does NOT need sealant as the threads are of a slightly different form and actually do 'crush' with zero clearance as the taper is made up.
Since nobody ever marks anything right, then goop/tape should be used at all times and then you know for sure that it will not leak.
Amen to that Ken Todd!!!!!!!!!!!!!
How about people who use it on flare fittings and compression fittings? I don't get that. We bought a new fridge from Lowes. When they delivered it, they started to put thread tape on the compression fitting for the ice maker line. I told him not to. He said he HAD to or else they weren't responsible if it leaked. Whatever. I don't guess it hurts anything, as long as it's JUST on the threads and doesn't get into the ferrule area, but WHY?
the answer to your question is -
People don't know what they don't know!