<VV> Sealing the flexplate bolts, PST=PTFE?

[jvhroberts at aol.com]

 Yanno, you're absolutely right, this stuff doesn't contain Teflon! I am mistaken! I was thinking of one of the other Loctite thread sealants which does. My apologies! 

PST should work fine then... 

 

John Roberts
 

 

-----Original Message-----
From: Frank DuVal <corvairduval at cox.net>
To: virtualvairs at corvair.org
Sent: Tue, Feb 1, 2011 12:37 am
Subject: Re: <VV> Sealing the flexplate bolts, PST=PTFE?


OK, I admit, chemistry is not my area of expertise, but Teflon is the 

Dupont name for PTFE, or polytetrafluoroethylene.



Henkel, Loctite's parent, lists the ingredients in the MSDS here:



http://henkelconsumerinfo.com/products/henkel.datasheets.Search.pdf?BUSAREA=0006&DOCTYPE=MSDS&LANG=EN&COUNTRY=US&MATNR=504467&VKORG=3450''



and while there are many glycol compounds listed, I only see one ethyl 

:  1-methylethylidene.



It does, later on, admit to a decomposition product of toxic flourine 

compounds.



So which of these listed products would tell me Teflon was in this 

threadlocker?



Henkel speak for it's attributes:



Loctite® PST® Thread Sealant Stick is a single component, semi-solid 

anaerobic pipe sealant compound. The self-feeding applicator stick 

facilitates application of the material where a conventional liquid or 

paste would be difficult to use. Loctite PST Stick cures rapidly to 

provide immediate low-pressure sealing. The controlled lubricity 

prevents galling and protects mated threaded areas from rust and 

corrosion and eases disassembly. Recommended for sealing metal tapered 

pipe threads and fittings in automotive applications.







Frank DuVal



EE not CE







On 1/30/2011 2:52 PM, jvhroberts at aol.com wrote:

>   I might caution against this stuff, because it's full of Teflon. As such, it 

will actually reduce any thread locking ability. I've had experiences with other 

mechanical assemblies where the threads of a power transmitting assembly were 

sealed with a Teflon sealant, and we couldn't get the bolts to stay tight! If it 

were me, coating the mating faces of the flex plate and the undersides of the 

bolt heads with gasket sealer would do an admirable job. That's what we did! 

Leave the threads alone, as any sealant I can think of will cause torquing 

inaccuracies, etc.

>

>

>

> John Roberts

>

>

>

>

> -----Original Message-----

> From: Matt Nall<patiomatt at aol.com>

> To: bryan at skiblack.com

> Cc: virtualvairs at corvair.org

> Sent: Sun, Jan 30, 2011 2:36 pm

> Subject: Re:<VV>  Sealing the flexplate bolts

>

>

> http://www.amazon.com/Loctite-Thread-Sealant-Stick-Performance/dp/B0015PJCHG

>

>

>

>

>

> Matt Nall

>

> Charleston, Oregon

>

> http://mysite.ncnetwork.net/reswr0kp/

>

>

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