permatex timing

GoldenMotor.com

CTripps

Active Member
Aug 22, 2011
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Vancouver, B.C.
I think permatex has to cure overnight at 'finger tight' before it can be considered dry, but as I don't have a tube in front of me to check the fine print I can't be certain right now.
 

GearNut

Active Member
Aug 19, 2009
5,104
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San Diego, Kaliforgnia
I have a tube of it in my hand right now.
Reading the label:
"Silicone dries in 1 hour, and fully cures in 24 hours, at 70*F (21*C) - 50% relative humidity. Allow more time in cold weather."

Real world translation:
After 1 hour is has jelled. It is nowhere near cured yet.
If you want full strength and not risk failure under stress you must wait 24 hours.
 

MEASURE TWICE

Well-Known Member
Jul 13, 2010
2,775
1,274
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CA
I used that stuff, and I intend for it to hold a little pressure from the hose going from the 4 stroke engines crankcase breather to the carb.

While I was going to check the valve between the breather and the carb, the low pressure of my breath to check bubbled the stuff.

It was not even 1 hr set so adding more of the stuff and smoothing it out and have it set for a day and was good to go. I did not test it yet as I have to get time and place to ride legal. It is OHV reg only, not for streets.

Vibration may not be good for it while it goes from 1 hr to 24 hr mark, but I would think it less critical than my application.

MT
 

SuperDave

Member
Sep 24, 2011
179
0
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Panama City Beach, Fl. USA
If the sealant is needed to seal against compression(head, exhaust) or vacuum(intake, crankcase), then wait for it to cure. If its for a waterproof seal such as the mag cover or clutch, it'll be okay after an hour.
 

mapbike

Well-Known Member
Mar 14, 2010
5,502
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Central Area of Texas
If the sealant is needed to seal against compression(head, exhaust) or vacuum(intake, crankcase), then wait for it to cure. If its for a waterproof seal such as the mag cover or clutch, it'll be okay after an hour.
Agree, timing covers and the such are under no pressure and I would think an hour or so will be plenty of time.

Map