A sealing bolt for sealing a container lid to a body with a threaded bore includes a shaft, a head connected to a first shaft end, and a threaded second shaft end engaged with the bore to lock the lid between the head and the body. The bolt includes a security element with a breakable integrity element. The security element comprises a first part arranged at the second shaft end, connected to the shaft with a breakable integrity element therebetween. The first part has a first thread cooperating with the bore, and a second part between the first part and second shaft end includes, a second thread cooperating therewith. An entrainment device disposed between first and second parts such that when the shaft and first part rotate in a tightening direction, second part is entrained. When the shaft and first part rotate in a loosening direction, second part remains stationary.