thermostat gasket square?

I got a new thermostat and gasket . The thermostat is round but the gasket is square "ish . Is this right . I just don’t want to get started then be F***ed .

No… I just replaced the thermostat this weekend and the gasket is not square. It should be round just like the thermostat with a little bump in it for the thing on the edge of the thermostat.

Thanks . I thought it looked fishy . The punk at the part’s store was arguing with me . I told him it’s his a$$ if it’s the wrong one !!:mad: