thermostats

[steplift20]

ok heres a stupid question, I have a 150 mercury 1988 outboard and i own it for about 12 years and this is what i would like to know
when you install the thermostats how does the rubber gasget get attach to the thernostat, i know its a stupid qustion but the reason im asking it is because i was just on a web site thats sells them and they showed a picture of it and the rubber gaskit is attached completly differant than the way i always put it on, i always fit the thermostat it the groove that on the gasgit but the pic showed it differant, any pics would be great
thanks