vbls

iTrader: (17)

ok i know the AN fittings are goos, but what about the NPT? like the purge and gauge, i put liquid thread sealer but it seems like i have to tighten it so tight to get the hissing to go away. any tricks?

4DK

I use liquid Teflon (*sp)

ATwelveSec02Z28

iTrader: (17)

teflon paste. Just remember, the paste is not a sealant, it is simply a lubricant on NPT style thread.

speedtigger

iTrader: (16)

Several of the nitrous experts on Yellow Bullet say they use Loc-tite Blue instead of teflon paste. They say just dont use Loc-tite Red!

rpcase

iTrader: (9)

Use teflon paste....blue loctite works but even the blue can make the fittings hard to take apart.

RsSean

iTrader: (27)

I used ptf Teflon paste. Same stuff that is used on threads of head bolts that enter a cooling jacket on older motor

89ROC-Z

iTrader: (11)

Exact opposite. Loctite red is all I use after calling a couple nitrous companies and that's what they suggested.

vbls

iTrader: (17)

yeah i use the teflon paste also, when i screw it in, all it does is bunch up the paste, its not even on the threaded part.

speedtigger

iTrader: (16)

Be careful with that advise! You have to be specific.

This is this is the one they say not to use:

Loctite® Threadlocker Red 271™ is designed for the permanent locking and sealing of threaded fasteners. The product cures when confined in the absence of air between close fitting metal surfaces. It protects threads from rust and corrosion and prevents loosening from shock and vibration. It is only removable once cured by heating up parts to 500°F (260°C).

Loctite® Threadlocker Blue 242® is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools. The product cures when confined in the absence of air between close fitting metal surfaces. It protects threads from rust and corrosion and prevents loosening from shock and vibration. Loctite® Threadlocker Blue 242® is particularly suited for applications on less active substrates such as stainless steel and plated surfaces, where disassembly is required for servicing.

There was a product called Loctite Thread Sealer 545 that came in a red bottle, but I am not sure if they make it anymore. it is not listed on the Loctite website. This may be an ad for "new old stock": EDIT: I doubt this is a good choice though, the TDS sheet says this: This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials.

If somebody uses Loctite® Threadlocker Red 271™ they are likely going to be real unhappy when disassemble time comes.

WS.666

iTrader: (28)

I thought AN fittings were fine by themselves because of the tapered ends.

speedtigger

iTrader: (16)

This is not for the AN end. This is for the pipe thread side that screws into the solenoids.

Footlead

iTrader: (18)

Loctite Blue!!!!!

Sales@Tick

iTrader: (3)

We use Loctite blue.

Neal@NitrousOutlet

we recommend blue locktite as well.

Ksths2

iTrader: (1)

Locktite for me as well..... also works awesome for airbag fittings (suspension) as well