A/C seals

383scuda

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I am trying to restore the heating and A/C on my 1978 Aspen Super Coupe. I decided to purchase a new evaporator. The original evap coil had grooves in the rectangular block for O-rings (2). The replacement is a flat block with no O-ring grooves. I do not understand how this is to seal. I also have a new expansion valve with several O-rings and flat gaskets with no mention where they go. Anyone with insight?
 

Justwondering

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Now I could be wrong, but in my 87 fifth avenue it has flat blocks but uses those 'one use only' flat metal 'gaskets' with the raised ring. I'm pretty sure there is a thread on here about my dramatic saga fixing my a/c. Let me see if i can find it.
JW
 

Mikes5thAve

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Just remember that 1978 used the old V style/rv-2 compressor still and there are some differences in how the different parts of the system connect.
You can usually line up the flat gaskets with with freon hole and bolt that holds it together.
 
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