pipe thread?

[rayclar]

When installing hydraulic fittings with one end pipe thread should i use tee tape there or just use the fitting bare?

 

[Egon]

Maybe use pipe dope. :thumbsup:

Bare threads ain't the best.

 

[deereman75]

I use teflon tape for all tose sort of things, air lines, water lines, ect..

 

[Sockwell]

Loctite makes a sealant for use with NPT threads in hydraulic systems. We use it in plant maintenane w/o leaks.

 

[leonz]

If you use too much tape you can break/crack the fitting.

Always err on the side of liquid pipe dope as long as the fitting is a low pressure fitting only.

 

[J_J]

When installing hydraulic fittings with one end pipe thread should i use tee tape there or just use the fitting bare?

I would recommend using a sealant/lubricant on all NPT pipe fittings.

 

[Soundguy]

i like gasoila... I HATE tape.

tape threads block small prts when it shreds.. and solvents won't remove shreded tef tape inside small valves...


soundguy

 

[Shield Arc]

Years ago I learned from a heavy equipment master mechanic to use the black Permatex gasket sealant on hydraulic fittings. He also said never use teflon tape, excellent way to take out a pump!

 

[Gary Fowler]

I like the heavy white teflon paste. Excellent lubricant and thread sealer without the possibility of shredded teflon getting into your system later. That said, properly applied T tape will not harm your system on initial installation. Where you get the problem is when you have to remove a connection that has had tape in the threads. It is almost impossible to get all of the tape out of the female connection without some special brushes. Avoid all that with the paste. A bit messy but just as effective.

 

[Scooby074]

Loctite 592 PST.

Tape SHOULDNT be used, especially on any of the pressure or supply lines...

HOWEVER, lately ive been seeing major issues with chinese sched 40 pipe and fittings being basically crap, and leaking like a sieve no matter what dope was used or tightness achieved.

A trick i learned from an old timer was to smear dope on the threads first, then a wrap or 2 of tape 2-4 threads back from the opening (so you dont contaminate the fluid), then cover that with a layer of dope. You WONT have any leaks after this, even on poorly made fittings. But you muat take extreme care to keep the tape well back from the opening, especially on supply lines to the pump.

Another oldtimers trick was to wrap the threads of the pipe in silk thread along with dope. I havent done the latter, but have had great luck with the above trick on problematic fittings.