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Discussion Starter #1 (Edited)
Ok so I don't apply pipe dope to the threads of a tub strainer before you screw it into the shoe of the W/O assembly, One plumber that works with us says a engineer told him it needs it, let me say one thing here, where it threads into the shoe of the drain is not where a seal takes place, dope is not needed there, the seal is at the gasket and the putty. Who here puts dope on those threads?
 

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Agreed, and even if it does manage to drip a bit it should wind up inside the tub shoe anyway. But yes, I agree the seal is with the rubber gasket underneath, and the putty on top. Though I started adding tub/tile caulk around the basket after I tighten it just to be sure.
 

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T + 2 use it on all the strainer threads. Found that i have had less leaks for some reason that way.
But, i have seen some guys put dope on a toilet tank gasket. Ex-boss told them to do it. Never understood that one. i see dope all the time on things that dont need it. water heater flex connectors, no burst supplys, true sign of a rookie.
 

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Discussion Starter #7
He told me it makes it screw in better, ha, there not even a tapered thread, I showed him, I go, watch this, see how easy it screws into the shoe, he was not convinced it was not needed, so I told him do what he likes, it won't change my way of doing it.
 

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I dont have a can of it in front of me, but isn't clearly printed on the label of all dopes, that it is just a lube, not a sealent?
 

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He told me it makes it screw in better, ha, there not even a tapered thread, I showed him, I go, watch this, see how easy it screws into the shoe, he was not convinced it was not needed, so I told him do what he likes, it won't change my way of doing it.
Never thought of it, but you are 100% right, it is NOT a tapered thread!
 

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Cool, not that I'll start using it, only time I thing I might use it is in an all bass application, but I see no seizing of the threads in a plastic application.
 

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I dont have a can of it in front of me, but isn't clearly printed on the label of all dopes, that it is just a lube, not a sealent?
i think you're right and that's why i use it sometimes. i will use it on a tub strainer if the shoe is brass as an anti-seize. i can't remember using it on abs ones though.

Plumbers faucet grease on the threads.

One of you service guys will thank me for it later when you can easily disassemble it.

i use faucet grease on all sorts of stuff for this same reason and i am a service plumber!! if i'm doing any service plumbing in Il, i'll thank you in advance right here. it really does make a difference. i put it on delta shower valve domes when i rebuild the valve and they aren't frozen up for the next guy.




paul
 

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I put Dope Megalock on mostly every thread i make up.. I put it on the tub thread just to make it screw in smoother.. Just a habit ..
 

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i use dope on the strainer threads, i fell like it threads in easier, and thats the way i was taught to do it so ... its just habit now
 

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The reason for dope on a tank to bowl gasket is so it can seat easily without the binding that a dry gasket occasionally encounters. It's not a big deal but it's just one of those little things that makes it all easier and better.
 
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