257-1406-RLS: O-Ring, Platinum Cured Silicone, 120mm, 5/pk. Foxx Life Sciences Replacement Gaskets are available for 50mm, 83mm, and 120mm caps. Our Replacement gaskets are made of platinum-cured silicone. When used with our EZgrip carboys and VersaCap, they are guaranteed to create a leak-proof container. Foxx Life Sciences EZgrip Carboys are designed to provide users with a highly versatile container that maximizes storage efficiency and ease of use. The distinctive rectangular shape saves valuable bench space. Larger handles on top of the container and molded grips in the base provide a secure grip to make lifting, handling, and pouring easy. Carboy material and volume are clearly imprinted on the outside of the bottle, along with large, easy to read metric graduation marks which are certified to 5% accuracy. Recessed spigot location allows for Carboys to be stored on any surface without overhang, and the Foxx Life Sciences Spigot is 100% leakproof.