O rings at the dryer for '64 Coupe A/C
Thread Starter
Instructor
Joined: Sep 2016
Posts: 215
Likes: 8
From: Houston, Texas
O rings at the dryer for '64 Coupe A/C
Hello Members,
I am working on the factory A/C on my '64 coupe and noticed there is no o-ring at the two lines going into the dryer. Shouldn't there be some? Thank you in advance.
I am working on the factory A/C on my '64 coupe and noticed there is no o-ring at the two lines going into the dryer. Shouldn't there be some? Thank you in advance.
Drifting
Joined: Nov 2016
Posts: 1,584
Likes: 560
From: LA-LOWER ALABAMA
My 1965 has o-rings on the dryer fittings. Show us a pic of the fittings and we can tell you for sure. All my fittings are oem.
If your dryer tube looks like this one yes you need o-rings.
https://www.corvettecentral.com/63-6...se-with-452097
If your dryer tube looks like this one yes you need o-rings.
https://www.corvettecentral.com/63-6...se-with-452097
Last edited by smacota1; Jun 10, 2026 at 09:01 PM.
Racer
Joined: Dec 2025
Posts: 327
Likes: 121
From: Pachuta, MS
Definitely need o-rings.
.... and don't even think about reusing the dryer even if the system has been sealed. This is one of the required parts to change if you are changing refrigerants. Depending upon how good your hoses are there is a fairly high probability that they will fail soon after charging if they are old.
.... and don't even think about reusing the dryer even if the system has been sealed. This is one of the required parts to change if you are changing refrigerants. Depending upon how good your hoses are there is a fairly high probability that they will fail soon after charging if they are old.
Last edited by acstephenson; Jun 10, 2026 at 11:24 PM.
Thread Starter
Instructor
Joined: Sep 2016
Posts: 215
Likes: 8
From: Houston, Texas
Thank you. I am going to change out the dryer. The hoses look like new to me so at some point previous owner repaired the system. Surprisingly the previous technician didn't put in the o-rings there. Everywhere else I saw o-rings and that is why I posted this problem.
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Racer
Joined: Dec 2025
Posts: 327
Likes: 121
From: Pachuta, MS
I would advise you to initially just put o-rings on the dryer and reuse it before installing the new dryer. As old as the components are, there is a fairly good chance your evaporator, compressor, or condenser have problems and you won't know until you draw down the system initially. You don't want to expose the new dryer to moisture before you have to.
Race Director
Joined: Apr 2005
Posts: 11,284
Likes: 2,146
From: Bowling Green, Kentucky
I would advise you to initially just put o-rings on the dryer and reuse it before installing the new dryer. As old as the components are, there is a fairly good chance your evaporator, compressor, or condenser have problems and you won't know until you draw down the system initially. You don't want to expose the new dryer to moisture before you have to.
Larry