Head stud sealant

caddy600

Junior Member
Hi, pro flathead builders!
Is Permatex #2 Form-A-Gasket Sealant useable choise to seal head stud bolts?

Regards,
Juho
Finland
 

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The machinist (builds everything from flatheads to salt flat cars) that built the 8ba in my '39 p/u recommended Permatex #2 so that's what I used. No issues after a couple of thousand miles on a great running flattie.
 
I have bolts in my Mercury 8CM,,,,,,I was planning on using white liquid Teflon.
Good idea,,,okay to use ?
The threads are good in the block,,,,,and the bolts,,,,I’m just trying to seal against antifreeze coolant .

Tommy
 
The machinist (builds everything from flatheads to salt flat cars) that built the 8ba in my '39 p/u recommended Permatex #2 so that's what I used. No issues after a couple of thousand miles on a great running flattie.

Non hardening Permatex #2 is also what I've always used on stud or bolt threads that go into the blocks water jacket.
 
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