What was found
RDU FL324 - ON CLIMB-OUT FROM CLT, JUST PRIOR TO PASSING RDU, CAPTAIN REPORTED HEARING TWO LOUD BANGS FROM THE FORWARD CABIN/MAIN ENTRY DOOR AREA. FLGIHT DIVERTED TO RDU AND LANDED WITHOUT FURTHER INCIDENT. RDU MAINTENANCE HAD DIFFICULTY OPENING THE DOOR, SO THE PASSENGERS HAD TO EXIT FROM THE AFT ENTRY DOOR. NO EMERGENCY WAS DECLARED. MAINTENANCE FOUND THE FORWARD ENTRY DOOR SEAL HAD BLOWN. REMOVED AND REPLACED DOOR SEAL AND TWO ROLLERS THAT WERE FOUND BROKEN. PRESSURIZATION CHECK AND OPERATIOAL CHECK OF DOOR NORMAL. (M)