Class 4 (4th Engineer) MEP 📅 May 2023

Exam Question

(a) Describe uses of packed gland seal, which all machinery they are in use? in a running pump, how the gland packing is lubricated and kept cool? (6)

(b) Describe advantages of using gland packing. (5)

Reference Answer

### (a) Uses, Machinery, and Lubrication/Cooling of Packed Gland Seals
**Concept and Purpose:**
A packed gland seal, commonly known as a stuffing box, is a sealing mechanism used to control fluid leakage around a moving shaft (rotating or reciprocating) that passes through a stationary housing. It consists of a chamber (the stuffing box) filled with rings of semi-pliable packing material, which are compressed by a component called the gland follower. This compression forces the packing to expand radially against the shaft and the stuffing box wall, creating a seal.
**Machinery Where Packed Gland Seals are Used:**

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