The Ford Barn

JD-OHIO · 03-19-2021, 08:52 PM

I am going to replace the gas shutoff valve on my 31 s/w town sedan with indented firewall. What is the recommended sealant to use on the threads where it screws into the outlet of the gas tank?

700rpm · 03-19-2021, 10:10 PM

... oops. wrong thread.

Slowmotoring · 03-20-2021, 07:01 AM

I would use gasoila. You can get it at tractor supply.

JayJay · 03-20-2021, 10:48 AM

I use Permatex 59214 Thread Sealant. No reason for the "High Temperature", it was what was available at my local auto parts store. It has worked well, I had one shutoff valve that was leaking and it sealed it up fine. I keep the tank dry for at least 24 hours after screwing in the valve to let the sealant have a chance to set. I have not had luck with so-called "teflon tape" in gasoline applications, the gasoline seems to dissolve the tape.

JayJay

katy · 03-20-2021, 10:53 AM

Quote:

Originally Posted by JayJay

I use Permatex 59214 Thread Sealant. JayJay

Is that the stuf w/teflon in it?

JayJay · 03-20-2021, 10:59 AM

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Quote:

Originally Posted by katy

Is that the stuf w/teflon in it?

I don't know about "the" stuff, but yes, it does have teflon (PTFE) in it. Here's a link to the product data sheet. I'm not saying it's the "best", I'm saying it's what I've used, it's readily available and works well for me.

I suspect that some flavor of Locktite would also work, but Locktite is a different product - polymethyl methacrylate compound, aka Super Glue. Not typically used on tapered fittings like the gas valve.

JayJay

DHZIEMAN · 03-20-2021, 11:56 AM

I use Permatex! Never had a problem. However had problems with new petcocks not being of quality and them leaking! Sad situation on some parts and in this case a safety issue.

03-19-2021, 08:52 PM	#1
JD-OHIO Member Join Date: Jan 2020 Posts: 48	Gas tank shutoff valve I am going to replace the gas shutoff valve on my 31 s/w town sedan with indented firewall. What is the recommended sealant to use on the threads where it screws into the outlet of the gas tank?

03-19-2021, 10:10 PM	#2
700rpm Senior Member Join Date: May 2010 Location: Portland, Oregon Posts: 5,903	Re: Gas tank shutoff valve ... oops. wrong thread. __________________ Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole. Last edited by 700rpm; 03-19-2021 at 10:16 PM.

03-20-2021, 07:01 AM	#3
Slowmotoring Member Join Date: Nov 2020 Location: Upstate NY Posts: 94	Re: Gas tank shutoff valve I would use gasoila. You can get it at tractor supply. __________________ Good things take time

03-20-2021, 11:56 AM	#7
DHZIEMAN Senior Member Join Date: Dec 2016 Location: Sunrise Beach, Mo Posts: 439	Re: Gas tank shutoff valve I use Permatex! Never had a problem. However had problems with new petcocks not being of quality and them leaking! Sad situation on some parts and in this case a safety issue.