Product News

Cover Open Beakers and Bottles Securely with a Colorful, Stretchable Lid

KIMBLE® Silicon Lids protect precious samples on a wide range of laboratory vessels while adding a splash of color to your lab

DWK Life Sciences

DWK Life Sciences KIMBLE® Silicone LidsDWK Life Sciences KIMBLE® Silicone Lids. Credit: DWK Life SciencesMILLVILLE, NJ — January 7, 2020 — Using aluminum foil or plastic wrap to cap beakers and flasks has always been a quick fix with questionable effectiveness. The new KIMBLE® Silicone Lids stretch and conform to beaker tops for a tight and secure seal. New from DWK Life Sciences, the world’s largest manufacturer of precision labware, the lids provide a safer closure and are easier to use. Available in three sizes and three vibrant colors (see video), KIMBLE® Silicon Lids easily conform to fit on beakers, flasks, bottles, and cylinders. The stretchy silicone material creates a seal on spouts, beaded tops, or threaded necks on glass or plastic vessels. The lids are resistant to heat and chemicals and designed with tabs, so they are easy to put on or take off, even when wearing gloves. Dishwasher-safe and reusable, the lids are a sustainable solution for environmentally conscious labs. Best of all, KIMBLE® Silicon Lids come in bright colors for easy color coding and improve the overall appearance of busy labs. 

“We’ve been surprised with the popularity of these unique covers—we knew they were safe, secure, and provided a better seal for different laboratory containers, but we were just as happy to see how scientists liked their appearance—they’re using the lids to improve the appearance of the labs by replacing makeshift foil caps and stoppers with bright colors,” said Rick Schwartz, senior vice president of marketing and sales at DWK Life Sciences. “There is currently no other lab grade product available that remotely resembles our lids,” he added. 

KIMBLE® Silicon Lids have stretchable diameters; small lids have a 43 to 61 mm diameter, medium lids have a 64 to 76 mm diameter, and large lids are 84 to 116 mm diameter. Color choices include pink, green, and blue. Lids easily accommodate most 50 mL beakers up to 800 mL beakers. The silicon is resistant to most chemicals and withstands heat with a usable temperature range of -40°C to +180°C. KIMBLE® Silicon Lids are sold individually or in packages of three containing a small, medium, and large sized lid in each package. 

For more information, contact your DWK Life Sciences representative, or visit the webpage at

About DWK Life Sciences

DWK Life Sciences is the world's leading manufacturer and supplier of premium glass, plastics, custom configurations, and packaging solutions, combining the strengths of three global leading brands: DURAN®, WHEATON®, and KIMBLE®. The company's products and services offer global customers the most comprehensive range of labware for scientific research and analytical applications, as well as solutions for storage and packaging. With a global manufacturing footprint and extensive distribution network, DWK Life Sciences enables customers to accelerate the pace of research, discovery, and scientific applications while providing supply chain security.