[SOLVED] Exhaust Gasket Question

[245luigi]

I was just sitting here thinking; when I purchased the Tecnigas Next R Exhaust for the bike, it came with a "squish" gasket very similar to this one http://www.pedparts.co.uk/product/827/scooter-moped-exhaust-gasket . Im seeing this other kind of gasket all over the place for scooters:
http://www.racingplanetusa.com/exhaust-gasket-29x36x6mm-p-184-1.html?cPath=2_26378_26384&sessID=af6cc1d4119bc55324199f1fb6df7b1b

Should I have purchased this "ring"/"crush" gasket rather than use the "squish" one that tecnigas supplied? I dont feel any exhaust air coming from around the connection.

[245luigi]

For the record the answer is either/or; they both are fine