Aluminum to brass thread sealer

[OregonDMAX]

What type of thread sealant should I use to thread brass into aluminum. My fancy oil cooler has -12 an fittings and one rinkydink pos straight cut 1/2" hole for who the **** knows what for. I just need to plug it but don't want to use Teflon tape or pipe dope on something that screws into where oil (petroleum based product) is. I've seen what that does to Teflon tape. What should I use. Google was no help there were too many half assed suggestions on what might work but no clear answer other than petroleum resistant pipe dope. Any insight?

 

[Digmax]

Teflon

Sent from my C811 4G using Tapatalk

 

[NC-smokinlmm]

I would find an aluminum fitting, brass and aluminum are dissimilar metals. They will eat each other if exposed to salt...

 

[Rancelot211]

Weld it shut if it's not needed? Autozone has a thread sealant that will work great. It's a brown bottle or tube with a Indian head on it. Forget the name.

 

[OregonDMAX]

I borrowed rector seal from a neighbor.


Also, there is no salt in AZ but thanks for the warning

 

[Burn Down]

We use Loctite 565 at the Cat Dealer. I have sealed every possible metal combination you can think of with it and never had an issue.
http://www.loctite.com.au/3320_AUE_HTML.htm?nodeid=8802651537409

 

[PureHybrid]

What type of thread sealant should I use to thread brass into aluminum. My fancy oil cooler has -12 an fittings and one rinkydink pos straight cut 1/2" hole for who the **** knows what for. I just need to plug it but don't want to use Teflon tape or pipe dope on something that screws into where oil (petroleum based product) is. I've seen what that does to Teflon tape. What should I use. Google was no help there were too many half assed suggestions on what might work but no clear answer other than petroleum resistant pipe dope. Any insight?

If it's truly a straight thread you need an oring plug, not thread sealant.

We use Loctite 565 at the Cat Dealer. I have sealed every possible metal combination you can think of with it and never had an issue.
http://www.loctite.com.au/3320_AUE_HTML.htm?nodeid=8802651537409

You should try the yellow 577

 

[Awenta]

We use Loctite 565 at the Cat Dealer. I have sealed every possible metal combination you can think of with it and never had an issue.
http://www.loctite.com.au/3320_AUE_HTML.htm?nodeid=8802651537409

This is what I use for everything and would also recommend it!

Sent from my SM-N910V using Tapatalk

 

[Burn Down]

If it's truly a straight thread you need an oring plug, not thread sealant.



You should try the yellow 577

O-ring won't work unless it has a boss/relief cut in the threads. He will need a metal backed o-ring washer if it has no relief.

I will have to order some 577 and give it a try. What makes it any better than the 565?

 

[OregonDMAX]

i already got it, i used rector seal. its npt

not even really sure why i asked ive worked with hydraulics for a long time i had the shit i needed in my toolbox i just had a brain fart i guess haha

 

[PureHybrid]

O-ring won't work unless it has a boss/relief cut in the threads. He will need a metal backed o-ring washer if it has no relief.

I will have to order some 577 and give it a try. What makes it any better than the 565?

We call those stat-o-seals or banjo washers.

577 holds tighter, cures faster. If you are constantly installing and removing the same fitting I wouldn't recommend it. We still use 565 if the customer requests it, but haven't used it exclusively for a couple years.

 

[x MadMAX DIESEL]

I use 577 at work all the time it is good stuff


Sent from my iPhone using Tapatalk

 

[2004LB7]

I borrowed rector seal from a neighbor.


Also, there is no salt in AZ but thanks for the warning

2x for rector seal. I've had great success using this. Co workers and i at my prevous job used to call it rectum seal. But no joke works great.