o-ring thicknesses for VIR tubes and hoses?

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spotrot
Posts: 3
Joined: Thu May 31, 2018 2:05 pm

o-ring thicknesses for VIR tubes and hoses?

Postby spotrot » Thu May 31, 2018 2:12 pm

My auto ac o-ring kit has o-rings in the proper diameters in both 0.070 and 0.100 thickness.

I think 0.070 is correct for all of them but this seems thin. As anyone who has replaced a VIR in a Corvette knows, you don't want to have to do it again!

I appreciate any direction on this.
Dougflas
Posts: 209
Joined: Mon Apr 18, 2016 6:10 pm

Re: o-ring thicknesses for VIR tubes and hoses?

Postby Dougflas » Thu May 31, 2018 6:34 pm

What year? Some GM’s used capture type o rings.Also, which connection?
spotrot
Posts: 3
Joined: Thu May 31, 2018 2:05 pm

Re: o-ring thicknesses for VIR tubes and hoses?

Postby spotrot » Fri Jun 01, 2018 8:14 am

Thank you for your reply.

It's a 1973 but my understanding that all the Corvette VIR's are identical.

I'm interested in all the connections and believe they all use approx 0.070 thickness o-rings - but my auto AC o-ring kit has similar diameter o-rings that are also about 0.100, hence the confusion.
Dougflas
Posts: 209
Joined: Mon Apr 18, 2016 6:10 pm

Re: o-ring thicknesses for VIR tubes and hoses?

Postby Dougflas » Sun Jun 03, 2018 8:03 am

Just measured mine from my kit. Use the .070 size. Good luck on installing a VIR in a 1973 Vette. Make sure the top of the VIR is in the correct orientation. You may want to use a SMALL amount of Never Seize on the threads.
spotrot
Posts: 3
Joined: Thu May 31, 2018 2:05 pm

Re: o-ring thicknesses for VIR tubes and hoses?

Postby spotrot » Sun Jun 03, 2018 9:32 am

Thank you for the reply and answer. I've just installed the .070 and they appear to fit the application properly.

I certainly agree about the VIR. Next time I may switch to a VIR eliminator (orifice tube and dryer) and a compressor that can handle cycling.

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