A lid for a medical container including a body portion including a locating element, a tamper evident security connector integrally formed with the body portion, the tamper evident security connector including an anchor portion and a frangible portion. The anchor portion can attach to and be retained by an engagement portion fixed in at least one direction relative to the medical container, thereby positioning the frangible portion between the locating element and engagement portion. The frangible portion is adapted to break on relative movement between the lid and the medical container. The lid can be suitable for use in an autoclave, and can be formed from a material or materials that are capable of withstanding a temperature of at least 140° C.
