A ___ ring is a spacer ring in a pump packing gland to improve seal water distribution.

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Multiple Choice

A ___ ring is a spacer ring in a pump packing gland to improve seal water distribution.

Explanation:
A lantern ring is used because it’s a hollow spacer placed between packing rings in the stuffing box that provides a dedicated path for seal water to flow into the packing area. This design distributes water around the circumference of the shaft, cooling and lubricating the packing, washing away debris, and reducing wear and leakage. A plain spacer or a gland ring wouldn’t channel the seal water effectively, and an O-ring is a different type of seal not intended for water distribution in the packing gland.

A lantern ring is used because it’s a hollow spacer placed between packing rings in the stuffing box that provides a dedicated path for seal water to flow into the packing area. This design distributes water around the circumference of the shaft, cooling and lubricating the packing, washing away debris, and reducing wear and leakage. A plain spacer or a gland ring wouldn’t channel the seal water effectively, and an O-ring is a different type of seal not intended for water distribution in the packing gland.

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