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.

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.

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.