Does a mechanical seal gives 100% leak proof sealing or some leakage is allowed like gland packing in pumps? - Quora
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Water Pump Gland Packing Seal Ring Cotton Grease Gland Packing Super Mechanical Seal Fine Finish Flexible and Elastic, Easy to Handle. Economical Packaging - China Gland Packing, PTFE Gland Packing | Made-in-China.com
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