Originally Posted by David Mc
How much thicker? I'm not sure on Corvettes but GM used fractional and metric o-rings. They also used captured and non captured.
The correct ones are important but will immediately leak if the wrong one is used..
I have just returned from the NAPA store. They were able to "match" all but two rings. The very small one for the expansion valve and another one. He gave me a black one for the expansion valve in case I could not find a green one. I will try our local AC guy tomorrow.
Thanks again, Bob