What is the BEST sealant for threads??

[riotwarrior]

Barb fitting is IMHO incorrect that fitting if it rotates is for a male flare fitting into the hex on the 90....

Go back where you got those parts and see if you can get the correct part with hose barb...that's my best suggestion

JM2CW

Al

 

[RLDSL]

The 90's are pipe.thread into the valve. Then it has a flare fitting (?) , a cone with a nut, and that seals to the hose barb.




tinIT Sounds an awful lot like where you have those brass fittings poked in , they are tapped for inverted flare fittings like you would find on automatic tranmission cooler lines, , and not pipe fitgs

EDIT : Does the barb have to be tapered on the inside to.seal against the cone on the 90*?

IT Sounds an awful lot like where you have those brass fittings poked in , they are tapped for inverted flare fittings like you would find on automatic tranmission cooler lines, , and not pipe fittings, the two are not compatible, but a person could make the mistake of threading one into the other

 

[homelessduck]

I should have looked at it myself before handing them my cash. They specialize in this stuff so I didn't second guess them. If it came down to a refund I would have to wait for a check in the mail, they "can't" give over the counter refunds.
I'll take it apart and see what it looks like, but it sounds like I have to replace it ... awesome.

 

[lotzagoodstuff]

Homelessduck, you are in Eugene correct? If you can't get the stuff you have sorted out, go to Fluid Connector Products (they might be going by MFCP now, recently change in ownership) and they will set you up with the right stuff.

You most likely have some pipe thread stuff that might be mixed with some inverted flare. Don't feel bad, it happens to lots of people.

I like your manual FSV, I have one in the parts bin waiting for my electric one to crap out someday.

Good luck.

 

[homelessduck]

I'm in Ruch, but the closest town is Medford, which is where I go.

Here's the funny part .. I went to fluid connectors ( Now they're Motion Flow)

That's why I assumed it was the right parts

 

[hce]

It is hard be teflon tape on pipe fittings. The times I have used sealant I get to do the job again. Got to be careful though. Leave one or two end threads exposed and there should never be any to contaminate the system, also would not use it post filter on a diesel. Besides sealing teflon taped threads will screw on farther with less effort.

 

[typ4]

Those 90''s say china on them as do almost all hyd fittings these days, we have a hell of a time getting them to seal.
The taps leave a line that is prone to leaking.

 

[MIDNIGHT RIDER]

It is hard to tell from the pictures, but I am going to venture a guess from your descriptions of the problem and say that you are mixing JIC fittings with standard NPT fittings without using a proper JIC adapter.

A proper JIC connection is hard to beat, BUT you must use all the appropriate fittings to acheive a seal.



That being said, plain old TEFLON tape is my sealant of choice for any liquid or air fitting I have ever had cause to work with.

Far less damage results from a stray bit of tape, than the abrasive damage caused by any of the special paste or liquid sealants.

I would definitely never use any of the tube/paste sealants upstream of an injector-pump.


Just dis-assemble a joint that has been sealed with paste and watch all the many hardened bits of sealant fall away and disappear within the confines of your fuel system.

TEFLON tape might clog an opening, but it is not going to leave scars on everything it touches.

 

[riotwarrior]

It is hard be teflon tape on pipe fittings. The times I have used sealant I get to do the job again. Got to be careful though. Leave one or two end threads exposed and there should never be any to contaminate the system, also would not use it post filter on a diesel. Besides sealing teflon taped threads will screw on farther with less effort.

Never ever ever ever use teflon tape on FUEL or oil systems or ....well ANY system on a motor vehicle what so ever.....

IT IS NOT ACCEPTABLE ON air craft......why would you lower your standards to less than that?

It is a proven fact that teflon tape can and does degrade, stays in fittings upon removal or service, and when you thread it back together you push that ***** in further.

DON'T DO IT JUST DON'T it's only good on cheap ass water pipe for filling pig pen watering troughs....that's it nothing more that ***** is nasty and I have said all of this at least a half a dozen times here before!

On a fuel system you can ***** things really quick....ad sometimes really slow...but just DO NOT USE IT!

JM2CW

Al

OH BTW quite a few others here agree with me and for good reason!

 

[79jasper]

In the oil field, I used this stuff http://www.americawestdrillingsupply.com/Kopr-Kote.asp plus still used tape with it. Sometimes just anti seize with thread tape. Gotta do what bossman says. Lol

 

[homelessduck]

I knew they wouldn't let me return it so I just tightened it a little at a time while rechecking it for leaks. It slowly started to leak less, and I think it's sealed now. It is way too tight though and I definitely don't feel comfortable with it. I'm going to order brass 90's and just use this until they get here.


Thanks for all of the help everyone! !!!