To replace parts on an impulse sealer, follow these simple instructions:
Unscrew fixed plate. (Below in green)
Remove teflon strips and heating element.
Place lower teflon strip, adhesive side down (below in yellow).
Place heating element, either flat or round (below in red) on top of lower strip.
Place upper teflon strip on top of heating element (below in blue).
Screw fixed plate back into place on sealer.