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#1
10-29-2012, 09:31 PM
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Vacuum Pump, to use sealant or not to use sealant
That is the question. Some say yes, some say no. The yes people say Hylomar PL-32. I am referring to the 124 with metal gasket. Maybe this could be a poll.
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Brian 87 300Dturbo 180K #14 head still running R-12 SOLD 12/2017 02 F350 Powerstroke 180K 05 Chevy Express 1 ton w/Royal Utility box 120K 08 Infiniti FX-35 40K 15 Golf Sportwagen TDI 35K 10 Sprinter 3500 chassis with a Class A Winnebago on it. 56K 
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#2
10-29-2012, 09:33 PM
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I say no. I've installed 4 and never used any sealant. no leaks so far.
hylomar is good stuff... lemme know if you want it to be a poll.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#3
10-29-2012, 09:45 PM
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I installed mine and did not use any form of sealant. The original did not use any, nor should the new one.
I can see where a very thin layer of sealant would help keep the gasket in place, but using some sewing thread to hold it to the bolt holes also works too.
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#4
10-29-2012, 10:31 PM
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I am not sure what you plan to seal?
On Paper Gaskets when I have it I use Gasgacinch; a light Rubber Cement type of gasket gunk. Coat the Part and Coat the Paper and let it dry a little. Install it and it is glued to the part so the Gasket does not come loose during installation. That stuff is thin enough that it soaks into the Paper and you can apply a coat; let it dry and repeat that until you end up with a rubber impregnated Paper Gasket. Because you let it get tacky or dry before installation it does not squeeze out into passage ways like some gasket stuff does. It is also is not hard to remove when the time comes to take something apart. Not expensive either.
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84 300D, 82 Volvo 244Gl Diesel
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#5
10-29-2012, 11:52 PM
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Nope no sealant on that one
And I've reused the metal gasket once and it didn't leak
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Cheers! Scott McPhee 1987 300D
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