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. Will a menstrual disc cause my period blood to get 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.