Size 18 XXXX cork stoppers are the epitome of superior quality in the realm of tapered corks. Tailored for professionals like chemists, chemical engineers, and workers in the industrial food sector, these corks are ideal for a myriad of applications, including laboratory use, sealing containers with oils, and managing moving liquids. Committed to sustainability and quality, these cork stoppers are made from 100% natural and renewable cork material. As a testament to WidgetCo's rigorous manufacturing standards, these cork stoppers ensure a dependable seal every single time they're used. Each stopper undergoes a comprehensive visual examination and is sorted and graded based on the size of the lenticels - the natural crevices found in cork. This meticulous attention to detail has led to the widespread popularity of our premium-grade cork stoppers for diverse laboratory procedures and food packaging applications. For a consistent, reliable solution for securing your containers and maintaining the integrity of your valuable work, trust in our Size 18 XXXX Cork Stoppers.