🔍 Key Concepts

• Function of seal piping in a centrifugal pump • Where sealing liquid is introduced relative to packing or mechanical seal parts • Purpose of preventing air leakage and lubricating sealing surfaces

💭 Think About

• Which pump component actually needs a small, controlled flow of liquid from the discharge to cool and lubricate the sealing area? • Which of these parts (packing gland, wearing ring, stuffing, lantern ring) is specifically associated with introducing sealing fluid? • Think about which item is a channel or distributor for liquid, rather than just a solid piece that is tightened or worn.

✅ Before You Answer

• Identify which option is directly linked to sealing liquid distribution, not just holding packing in place • Confirm which part is usually drilled or ported to receive seal piping from the discharge • Eliminate components whose main job is clearance control (wearing ring) or simply compressing packing (packing gland)