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sealer
When referring to a substance, "sealer" is a technical term used in construction, automotive work, and crafting. It differs from "paint" or "varnish" in that its primary purpose is functional—blocking moisture, air, or stains—rather than purely aesthetic. In a professional context, you will often hear it paired with the specific material it is designed for, such as "deck sealer" or "joint sealer."
As a device, "sealer" typically refers to industrial or kitchen machinery. The term implies a permanent or semi-permanent closure, often using heat or pressure to create an airtight bond. This is distinct from a "lid" or "cap," which are removable closures.
In a historical or geographical context, "sealer" refers specifically to the trade of hunting seals. This usage is now rare and is primarily found in maritime history or discussions regarding specific Arctic and Antarctic industries. It carries a distinct occupational connotation that is entirely separate from the technical meanings of the word.
Ý nghĩa
Ví dụ
Apply a clear sealer to the wood to protect it from moisture.
Pass me the vacuum sealer so I can pack these vegetables.
The heat sealer on the packaging line is malfunctioning.
We should use a waterproof sealer on the bathroom tiles.
The old ship was manned by a crew of seasoned sealers.
He spent his youth working as a sealer in the North Atlantic.
Does this sealer dry quickly or will it stay tacky for hours?