EZ Top Container Closures are used to create a complete container assembly when combined with a cap and container. Economical, designed for single use, EZ Tops play a key role in the reduction of cleaning and assembly time along with contamination from repeated use. One-piece construction eliminates product loss and contamination due to loose connections. The are made from C-Flex pharmaceutical grade resin and tubing to insure an unobstructed fluid path, extremely low levels of extractables and provide an elastomeric seal against glass, plastic and metal surfaces. EZ Tops are easily used with sterile connecting devices and thermal tubing sealers. Standard configurations fit a wide variety of glass, plastic and stainless steel containers, from 60mL vials to 20L carboys. Autoclavable, EZ Top Container Closures are pre-packaged in units of 10. Caps are specifically designed for use with the EZ Top Closures and sold separately in units of 10. Containers are also sold separately.