Seal

A seal prevents or limits unwanted transfer of product from one container to another. 

Seal Seal A seal prevents or limits unwanted transfer of product from one container to another. Seal is used as superordinate term for all types of sealing elements. Flame arrester Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame. is used as superordinate term for all types of sealing elements.