Replace gasket on a LG WM2077cw

Can't tell you the part number but it's not to complicated. first shut off the water supply, then flush the toilet to get the water out of the tank, then remove the water supply line, then unbolt the tank from the bowl and replace the gasket. be carefull when tightening the tank back up, you want to do it evenly and only untill the tank is solid. or you can crack the tank