Thread compound

[steviep]

Do you use any kind of compound on the threads of hydraulic hoses , such as Teflon tape or pipe dope.

 

[quicksandfarmer]

Depends on the fitting. On NPT fittings, pipe dope. One of the attractions of other types of fittings is that they seal without needing a thread compound.

 

[RNeumann]

Some guys love locktite. Typically it makes a good seal but it’s hard to get apart.
Be careful with other sealers like Teflon as they can cause issues if you get any inside the hydraulic fitting.

 

[crazyal]

Just had to replace one of the lines going to my chute rotator today. They used teflon tape from the factory on the pipe threaded end that the disconnect was attached to. Just make sure that the tape doesn't go past the end of the threads so if it comes off it can't get into your hydraulic system.

 

[joeu235]

If a fitting uses the threads to seal (tapered pipe fittings), the joint needs sealant. If the threads just hold the seals together (compression, flarred, etc), you should not use anything.

 

[radios1]

Teflon gets destroyed by petroleum products, don't use that!.. I know this from experience!..

 

[Ritothebull]

The make a gas rated teflon tape, its heavier and more of a yellow color.

 

[ericm979]

For NPT threads I've used Permatex 80632 teflon sealant made for hydraulic joints, and Loctite 545 also made for hydraulic joints. The Loctite works much better. It does not make the fittings difficult to loosen. I prefer to use JIC fittings where I can and NPT where I have to.

 

[WranglerX]

On tapered threads (NPT) PTFE tape or "dope"...

On straight threads, no tape or dope...

I hate tape and it hates me.... Never had great success with it....

My go to....



Dale

 

[WranglerX]

The make a gas rated teflon tape, its heavier and more of a yellow color.

That be "natural gas".... Not liquid gasses...

A little fyi for all tape users...

Thread seal tape - Wikipedia

Dale