The use of sealant in A/C systems, There are two types of sealants used in
A/C systems one is a thinner (conditioner) which makes the seals expand they
eventually dry out and leak twice as bad. The other type is a gel that
hardens in the presence of oxygen it will fill holes and cracks even in the
condenser or evaporator, did you do a 100% full vacuum on you're A/C system
to insure there is no oxygen in the system if your get in a accident and the
system is exposed to oxygen it is scrap...... Your choice but if you take
the time to properly find the leak and repair you will save the most in the
end.

Eric Ley
Garage Mechanic ELM
2001 Demers Franklin, Qc

--------------------------------------------------
From: "JRodgers" <jrodgers113@GMAIL.COM>
Sent: Wednesday, May 08, 2013 6:19 AM
To: <vanagon@GERRY.VANAGON.COM>
Subject:      Re: AC 134a refrigerant leak down

> Good stuff to know about. When the system was overhauled - the system
> was upgraded from R-12 to R134a with a kit from Van-Cafe that had all
> tht newer type seals. The thing didn't leak a drop from months,, then it
> started slowly losing it's cool - so to speak. Then I tarted adding a
> can of 134a once in a while. But I would like to stop that - and was
> hoping the sealant would do the trick.  Next time I add some I will use
> a type with sealant and dye.
>
> Thanks,
>
> John
>
> On 5/7/2013 9:23 PM, Tom Hargrave wrote:
>> Yep, that's why you replace the O-ring seals with less porous seals. They
>> used to also replace the rubber hoses for the same reason until the AC
>> community "discovered" that once the old hoses were soaked with
>> refrigerant
>> oil they sealed themselves tight enough to hold R134a. But the front
>> compressor seal is never replaced & often they will leak enough R134a to
>> pass a can or more / month.
>>
>> Thanks, Tom Hargrave
>> www.stir-plate.com
>> www.towercooler.com
>> www.kegkits.com
>> www.grow-sun.com
>>
>>
>