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Best gasket sealer

Discussion Forum at MarineEngine.com » Johnson Evinrude Outboard » Best gasket sealer « Previous Next »

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chris frail
Member
Username: rainbow988

Post Number: 20
Registered: 03-2009
Posted on Tuesday, September 22, 2009 - 04:54 pm:   Edit Post Delete Post View Post/Check IP

I'm getting ready to mount a head gasket and was wondering what you guys would recommend as a sealer?
..also for the water jacket gaskets.30HP Johnson thanks
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Tony Delio
Senior Member
Username: tonyob

Post Number: 1560
Registered: 05-2001


Posted on Tuesday, September 22, 2009 - 05:45 pm:   Edit Post Delete Post View Post/Check IP

I use Permatex Form-a-Gasket, 3H.

Lay the gasket on a piece of cardboard and paint the sealer on liberally. Then take a putty knife and press it out so that you have a very thin coat. Turn the gasket over and do it again.

If the gasket says "use no sealer" just ignore that and use the above process.
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Martin Johnson
Member
Username: martino1

Post Number: 18
Registered: 05-2009
Posted on Tuesday, September 22, 2009 - 10:12 pm:   Edit Post Delete Post View Post/Check IP

You will probably get several pros who will chime in with "never use permatex on an outboard." I use it all the time with great results. They make an aircraft version with a brush cap that is great for this purpose. Carbs and intakes are the only parts that I assemble dry.
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jwbmarine
Senior Member
Username: jwbmarine

Post Number: 4933
Registered: 11-2005
Posted on Friday, September 25, 2009 - 08:13 pm:   Edit Post Delete Post View Post/Check IP

i think,..what u may be referring to,..is silicon sealer..........i use aviation formagasket--brush-in -lid,..every day......its the exact same stuff,....as omc gasket sealing compound....i have used gallons...of both.......i never use,any permatex,in a tube...
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Billy Winter
Member
Username: bw94

Post Number: 76
Registered: 04-2009
Posted on Friday, September 25, 2009 - 10:25 pm:   Edit Post Delete Post View Post/Check IP

Where can you buy the aviation grade?
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David Townsend
Member
Username: daviet

Post Number: 98
Registered: 08-2009
Posted on Friday, September 25, 2009 - 10:37 pm:   Edit Post Delete Post View Post/Check IP

My local auto parts store carries it in stock all the time.
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Collector Inspector
Member
Username: collector_inspector

Post Number: 20
Registered: 04-2009


Posted on Monday, October 26, 2009 - 09:41 am:   Edit Post Delete Post View Post/Check IP

Hylomar in spray Can is best.

If you have Silicon coated OMC head gasket then DON'T use anything.

[IMG]http://i401.photobucket.com/albums/pp93/collectorinspector/Hylomar.jpg[/IMG]

Regards

B

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