TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Discussion Forum

Thread Sealer Question

Welcome Guest, Log in or Register

Author

John T

02-15-2003 07:20:26

Report to Moderator

Mornin, I have a thread sealer question. Im fixin to re restore my 38 B Long Frame as shes showin her age since the original restoration, (got a set of JD Rear Round Spokes to install also) and would like to hear what you guys have the best luck with for sealing pipe threads, especially where the sediment bowl assembly screws up into the gas tank. Thats an area that can't take too much torque or one might compromise the female pipe bond to the tank. Ive seen a lot of teflon thread tape used, but wonder if its compatible with gasoline over long periods and dont want a sealant that would bond so tight future removal could cause problems. I simply detest and will not tolearate any gas leaks if at all possible and already have the brass 3 way fuel valve well sealed. Please advise whats you guys have used and how it works over long periods and is teflon tape compatible with gas????? ???? Thanks in advance and God Bless Yall Ol John T Nordhoff in Indiana

[Log in to Reply] [No Email]

Mike

02-16-2003 10:14:59

Report to Moderator

Re: Thread Sealer Question in reply to John T, 02-15-2003 07:20:26

John; How did you get the 3 way valve sealed up ? I use the new cork packings from Deere but they seem to go bad after a couple of years,and I seem to have to replace them often. I have had real good luck on the fuel bowl to tank threads using permatex # 1 I think thats the # for the hardening type which is needed cause sometimes you can't get another turn to line it up
and lined up is too loose this stuff is fuel resistant and hardens in place but is not hard to unscrew after years if needed. It comes apart real good.

[Log in to Reply] [No Email]

Lee

02-16-2003 05:13:53

Report to Moderator

Re: Thread Sealer Question in reply to John T, 02-15-2003 07:20:26

I once read some where that the teflon tape was only used to lubricate a standard tapered thread pipe fitting. It works by getting the joint 'higher' up on the taper - so it's still the taper that does the actual sealing. I wish I could remember where I read that for all the non-believers.

Keeping the above in mind I like to use silicone rubber myself. But for gasoline it tends to soften up some, break up and float around, so I don't use it on carburator gaskets for example. But I would use it on the sediment bowl to tank threads as it's not likely to work into the gas. Silicone rubber is a very good lubricant and it sets up very mildly.

I suspect that teflon tape would stand up to gasoline for many decades, it's pure teflon and you can't hurt that stuff except by burning it. It's one of _the_ most chemical resistant substances there are.

[Log in to Reply] [No Email]

Steve - IN

02-15-2003 10:12:05

Report to Moderator

Re: Thread Sealer Question in reply to John T, 02-15-2003 07:20:26

John T,
I did the same thing about a month ago, so no long term results to report. Used the Loctite 565 between the tank and the sediment bowl and on the fuel line. It's about 5 bucks per tube. There's also a 564 PST which is rated to stand up to way more pressure than the tractor will ever see.

Also used some old standby Permatex aviation 3H goo on oil fittings for the same tractor, as it had been sitting here for years and years when I used to use it on dry sump oil fittings -- always worked then. Don't know which works better yet. My guess is they both will work.

I dismissed the Teflon tape as its price irked my penurious little soul.

Steve

[Log in to Reply] [No Email]

Clooney

02-15-2003 08:54:53

Report to Moderator

Re: Thread Sealer Question in reply to John T, 02-15-2003 07:20:26

John, Teflon tape should never be used on hydraulics or fuel systems. The threads cut the Teflon tape & the little pieces work their way into the needle & seat or hydraulic control parts. Teflon tape is not used in most industrial applications for that reason & have been known to cause a number of car fires. There are a number of sealers out there that are fuel & oil resistant, but most can't be rotated or re-positioned once the sealer is dried. While I'm not saying there aren't others out there, the best I have found is Loc-Tite PST pipe sealant with Teflon. There are different versions & strengths available & some formulated for use with stainless fittings. You can actually use that Loc-Tite PST on an air or fuel fitting while there is pressure in the system & it will seal as the fitting is installed & turned up tight. The Loc-Tite PST will also allow the fitting to be removed fairly easy at a later time..... .

[Log in to Reply] [No Email]

Mike Aylward

02-15-2003 07:42:50

Report to Moderator

Re: Thread Sealer Question in reply to John T, 02-15-2003 07:20:26

John, most of the time I use a small amount of #3 Permatex on the threads and that does the job. It doesn't harden so if you need to remove the bowl it causes no problems. You don't need to use much of it to work. I have used Teflon tape in the past but came back to the Permatex. I think it seals ok but don't know the long term affects of gasoline on it, plus it can look messy on an old tractor. You also risk getting tape over your fuel inlet pipe. Mike

[Log in to Reply] [No Email]

MPK

02-16-2003 21:07:26

Report to Moderator

Re: Re: Thread Sealer Question in reply to Mike Aylward, 02-15-2003 07:42:50

I have had good luck with teflon tape. When I wrap it on I make sure I don't go past the end of the pipe or fitting so it dosn't get into the system. I especially like to use it on a loose fitting where I just wrap on several turns to make it tight.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy