Cover that rolled using a special key, put it into boiling water. Apply to Bank and roll. Turn the jar upside down and leave in this position until cool.
Plastic cover put in the boiling water for 2-3 minutes, then quickly put on the Bank. When the cover has cooled, invert the jar. If the cover is properly dressed, then after complete cooling in the center should form a small recess.
Screw caps are screwed on banks (banks needs to be tapped), as well as plastic. During the autopsy, banks should sound like a click, if not, that is, the workpiece is not desirable.
Cover can be heated not boiling water, in a microwave oven. Put the lids in the oven for 2 minutes and turn on maximum heat.