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To achieve zero leakage between a moving member and a relatively stationery part, a wide range of seals and rings are employed. However the most common, least expensive and versatile in nature is the Gland Packing. Gland Packing provides a dynamic seal for a Rod, Shaft or Stem via housing or gland which is packed with resilient or semi resilient material, thus providing a localized contact area which offers a physical barrier to leakage.
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