Product review (3 stars): Overheat Thermostat for Samsung
On my Samsung Dryer, I have had three of these fail since purchased (3 years).  The original, then one of different supplier.  So I purchased TWO of these when ordered this replacement.  One failed within a week.  The rest of the circuit is fine (even changed the element to see if it was the problem source).  Ensured well ventilated exhaust system to ensure not cause of problem.  Appears to be a weak spot in the Samsung design.