How does an open-head drum secure its lid?

An open-head drum secures its lid primarily by using a bolted clasp-type ring. This method is effective because it provides a tight seal, which is essential for containing hazardous materials safely. The bolted clasp ensures that the lid is securely fastened to the drum, preventing leaks or spills that could occur if the lid were to come loose. This design not only helps in maintaining the integrity of the contents but also plays a crucial role in compliance with safety regulations concerning the storage and transportation of hazardous materials. The robustness of the clasp-type mechanism also enables easy access when necessary while maintaining a strong closure when the drum is sealed.