How long can I wear Flex Disc? The Flex Company March 15, 2021 22:54 Updated Follow Flex Disc can be safely worn for a maximum of 12 hours. After that, Flex Disc should be removed and disposed of. If you have any other questions, contact us here. Related articles My partner and I can feel Flex Disc during sex. Is My Menstrual Blood Going to be Pushed Back Up Into My Uterus? Is Flex Disc safe to use? Will Flex Disc work for me if I have endometriosis? Tilted Cervix & Flex Comments 0 comments Article is closed for comments.