Silgan Closures | 10,766 followers on LinkedIn. "Protecting the world's food supply."​ | "Protecting The World's Food Supply"​ Silgan Closures provides the seal that protects food and beverage integrity. For more information about our products & services please visit: www.silganclosures.com As a leading global supplier of an extensive range of metal, plastic and composite closures for consumer products, Silgan Closures designs innovative, easy-to-open and tamper-evident closures providing reliable performance.