uzavírací
Uzavírací is a Czech adjective derived from the verb uzavřít, meaning to close or seal. It describes something designed to close, seal, or block access, passage, or operation. The suffix -ací forms adjectives from verbs and denotes a functional purpose rather than a state.
In technical and commercial language, uzavírací is used with nouns for devices or components whose purpose
Related notes: the noun for a closure is uzávěr, and a closely related adjective is zavírací, which