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

[Steve Gangi]

Frank,
The MSDS only has to disclose the HAZARDOUS components and PTFE is not considered hazardous. 
There is probably a small amount in there based on the warning that it produces Fluorine by-products of combustion.


Steve Gangi


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Message: 3
Date: Tue, 01 Feb 2011 00:37:59 -0500
From: Frank DuVal <corvairduval at cox.net>
Subject: Re: <VV> Sealing the flexplate bolts, PST=PTFE?
To: virtualvairs at corvair.org
Message-ID: <4D479C37.4040509 at cox.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

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.
>
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> John Roberts
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>
>
>
> -----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
>
>
>
>
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> Matt Nall
>
> Charleston, Oregon
>
> http://mysite.ncnetwork.net/reswr0kp/
>
>