I guess the formulations have changed as I made out some writing on the
'silver' Permatex container..."prevents seizing, galling and corrosion of
metal parts in temperatures of -65(deg)F to +1200(deg)F."
No such temp ratings on the Kent copper.
Gordie
> Hmmm, I have Permatex silver and Kent "Rusty" copper. The Kent container
> states it is for brakes and I "assumed" that meant it was a high temp
> formula. Of course the container of Permatex silver I have is nearly 20
yrs
> old (and finally nearly gone) and I can no longer read anything on the
> bottle.
> It would appear I have been wrong all these years...thanks for the
> correction.
> Still wonder why they would use a lower temp product for brakes?
>
> Safety Fast!
> Gordie Bird
> 62 MGA
> 80 MGB
>
>
>
>
> > Silver (Nickel) has a higher operating temperature than copper (2400F
vs.
> > 1800F).
> >
> > According to Permatex: "It is recommended where copper contamination
must
> be
> > avoided, under conditions of extreme pressure and temperature, and with
> > stainless steel, titanium a"
> > and nickel alloys
> >
> > Also, copper is apparently unstable with acetylene.
> >
> > Permatex has more info:
> >
> >
http://www.permatex.com/products/prodidx.asp?f_call=get_item&item_no=77124
> > (Nickel)
> >
http://www.permatex.com/products/prodidx.asp?f_call=get_item&item_no=09126
> > (Copper)
> >
> > Jeff
> > '70B
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