Injector question

[ga.spyder]

I am in the garage to install my new injector,that hopefully will have me back on the road!My new injector that I ordered came with no seals.I dont have any usable ones.I bought a injector seal kit at the parts store,that has various sizes.At the injector nozzle,is that a very thin o-ring or the wider ,thicker (3/16'') seal that looks,for lack of a better description,like a tire.I am pretty sure the thicker seal is correct,but I really only want to do this once!!!! I have none of the old seals anywhere and dont want to start pulling good injectors.

[So Cal Mark]

the nozzle uses a fairly thick o-ring. Any looseness there will cause a vacuum leak

[ga.spyder]

Thanks for the quick response Mark!! That is the one I thought to use,but wanted to make sure.I would have posted a picture but my camera is down for the count.
Craig
ps...thanks to you and your office manager for getting the injector to me so quickly!