The objective of this research was to apply the Flexsim® simulation program to find the most suitable production sequence for a case study factory. The researchers experimented and found the most appropriate production sequence by entering 25 orders, the total production amount of 520 tons into the simulation model and experimenting with the production order of Earliest Due Date (EDD), Longest Processing Time (LPT) and First Come First Serve (FCFS) by experimenting with 30 replications in each format. Based on the analysis of the experimental results, it was found that the EDD production sequence has the least makespan time of 164.170 hours and without a tardy job. Whiles the LPT production sequence has a makespan time of 166.545 hours and the number of tardy jobs is 74 tons. The FCFS production sequence has a makespan time of 163.641 hours and the number of tardy jobs is 59 tons. From the simulation results, considering the smallest makespan time and the least tardy job, the EDD production sequence is most suitable because the makespan time is 164.170 hours which is the second smallest production time and without a tardy job which is the least amount of delay from all 3 forms of the production sequence.