Vacuum-sealed (8)
I believe the answer is:
airtight
(Other definitions for airtight that I've seen before include "Impenetrable" , "securely sealed" , "With no opening" , "Not allowing gas to pass" , "(Of a defence) having no weaknesses" .)
I believe the answer is:
airtight
(Other definitions for airtight that I've seen before include "Impenetrable" , "securely sealed" , "With no opening" , "Not allowing gas to pass" , "(Of a defence) having no weaknesses" .)