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Quad Seals?

Frostbite on Sat September 15, 2012 9:28 PM User is offline

Year: 1988
Make: Ford
Model: Thunderbird
Engine Size: 5.0
Refrigerant Type: r134a
Country of Origin: United States

Hey guys,

I'm in the process of setting my 88 T Bird up for r134a and have a question. I read a thread somewhere where a SEEMINGLY knowledgeable member stated that instead of using regular (green) o-rings where the high pressure and low pressure fittings attach to the compressor, you should use quad seals (have a square cross section). I just want to make sure I use the correct type of seals on those fittings. I already know to use Nylog on all of the seals and Schraders for a good seal.

Thanks for any help in advance!

HECAT on Mon September 17, 2012 10:29 AM User is offline

Quad seals fit the same groove sizing and can often be substituted for o-rings. The difficulty will come with finding quad seals in the right size and material. Some compressors do use a square seal at the compressor connection. Unless you are just dead set on re-engineering the connection seals, just use what is supposed to be there.


HECAT: You support the Forum when you consider for your a/c parts.


Frostbite on Fri September 21, 2012 6:14 PM User is offline

Thanks for the info on that.

Frostbite on Sat September 22, 2012 2:48 PM User is offline

Ok guys. I figured out what's going on here. If you remove the inlet and outlet fitting from the top of your compressor, you'll see that the o-rings that came with the comressor ARE actually quad seals. I took one of those quad seals down to NAPA and matched it up with their green o-rings. I bought 4 of them. THAT'S what the guy was talking about when he mentioned the quad seals. I'm going to Nylog the o-rings, so I should still get a good seal when everything is all buttoned up.

I just wanted to clarify where the quad seals were now that I found out.

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