In 33 years as a faculty member at the University of New Mexico, Seidler oversaw the construction of a gym and natatorium, as well as the addition of multiple degrees related to the fields of health and fitness.

[4] Inspired by boxing movements, his pugil sticks were intended to replace the outdated training that recruits of the Marine Corps had been receiving previously, allowing them to strike each other with more force with a lower risk of injury.

[9][10] After his time as chairman, Seidler briefly stepped away from the University of New Mexico, before returning as the director of athletic facilities.

[10] Before his retirement in 1990, he oversaw the addition of two physical education-related degrees and the construction of the Johnson Gym; he was also elected a fellow of the American College of Sports Medicine.

[9] A graduate fellowship in his name was created for students pursuing degrees in health and fitness-related majors shortly before his death in 2017.