fuel tank gasket leak

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MORNING LIGHT

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Oct 10, 2011
76
CATALINA 28 MK II MONTREAL QC CANADA
Hi since i've changed the the fuel tank sensor, it has been leakin ever since when i fill it up even though i did replace the gasket for a new one. the bolts are real thigh but the fuel will slowly make his way out. I tried silicone but it won't work . it is gotta be something to put on to make it fuelproof.
When it took the old gasket out, there was something sticky on it but i do not what it is . thankls

morning light
 
Ralph Johnstone

Ralph Johnstone

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Jan 4, 2006
7,275
Hunter 310 West Vancouver, B.C.
One of the Best Sealants is .............................

..................... Permatex 2. This material remains permanently soft and is widely used in the petroleum industry. I've used it without a gasket to seal a SS inspection plate to the polyethylene fuel tank. There's very little that Permatex won't stick to.
 

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Ray Bowles

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Oct 6, 2008
857
Hunter, Island Packet, Catalina, San Juan 26,38,22,23 Kettle Falls, Washington
Ralph's advise is right on but I am adding 1 more thought.
If you over tighten a gasket it crushes and will often leak or seep. Adding a sealing compound will help stop leaks but it too must not be over tighened. Firmly snugged up is enough
Many times Permatex 2 can be used without a gasket. A round bead of slightly less than 1/4 inch will form a seal. Let it sit for about 10 minutes and then tighten.
Ray
 
M

MORNING LIGHT

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Oct 10, 2011
76
CATALINA 28 MK II MONTREAL QC CANADA
Ralph Johnstone said:
..................... Permatex 2. This material remains permanently soft and is widely used in the petroleum industry. I've used it without a gasket to seal a SS inspection plate to the polyethylene fuel tank. There's very little that Permatex won't stick to.
Click to expand

thanks for the advise , i've been having leaking problem the whole summer
because of that . I apreciate
 
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