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End cap
2020-07-15
A closure is a component used to seal the end of a container, isolating the internal and external media; it is also known as an end cap. The closures of cylindrical containers are generally spun shells. According to the shape of the closure's surface, they can be classified as convex, conical, flat, and combined shapes. Convex closures are those with a convex outer surface, such as hemispherical, elliptical, dished, and seamless spherical closures. Some gas cylinders use a combined bottom closure with an inward-facing convex surface, ensuring both strength and safe usage.
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