Making hydraulic connections.

[Victory Pete]

Are you suppose to use any teflon tape or compound on the threads of hydraulic connectors?

Thanks

VP

 

[Soundguy]

yes, no, maybee.

You don't specify the type of connector.

many connectors commonly used are a jic style and seal on a metal to metal flange/lip... no sealant needed ..

orb style fittings ar ethe same.. they use an oring.. ORFS fall into that category.

swivel female pipe threads that seat on a metal flange also do not use sealant.

compression and flare fititngs do not use sealant..

plain old taper pipe thread (npt ) though you might see some british stuff!..seals by thread deformation... I like to use gasoila sealant ( harverys or others will work ) on them.. no tape.. tape tears into threads that can stick in valves and pilots and checks...

there is also a newer variant called NPTF national pipe taper fuel.. (dryseal) and it seals by thread deformation as well.. but generally can be used without sealant.

 

[Texasmark]

I agree and have been taught that teflon tape is a no-no.

I buy a goey paste at the local hardware store that is applied with a brush from a little 4oz (thereabouts) plastic bottle. It's a yellow green in color, has been made for many, many years, don't remember the name but surely there are others similar.

On the rear it gives the details as to what it is intended to seal, materials it is resistant to, pressure it withstands and all, also the fact that it never sets up hard.

And yes it is made for NPT fittings (tapered National Pipe Threads) that are used on most of my connector to hose connections. You purchase the hyd hose with male tapered NPThreads and pick and choose your connector accordingly. Most of the ones that I have seen have the inside machined for metal to metal flange lip in addition to the external threads. As Soundguy said, if you are using it for the latter, no sealant is desired nor required.


HTH,
Mark