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Gland Packing

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About Gland Packing

Gland packing, also known as compression packing or stuffing, is a sealing solution used to create a reliable and adjustable seal in various mechanical systems, particularly those involving rotating or reciprocating equipment. Gland packing consists of braided or twisted materials, often impregnated with lubricants or graphite, which are compressed within a stuffing box or gland to prevent the leakage of fluids, such as liquids or gases.

Here are the benefits and common uses of gland packing:

Benefits of Gland Packing:

  • Leakage Control: The primary function of gland packing is to control leakage in pumps, valves, and other equipment. By effectively sealing the interface between a moving or rotating shaft and the stationary housing, gland packing helps prevent the escape of liquids or gases, reducing environmental and safety risks.
  • Adaptability: Gland packing is adaptable to a wide range of applications, including those involving high temperatures, pressures, and corrosive or abrasive fluids. This versatility makes it a preferred sealing solution in various industries.
  • Adjustability: Gland packing can be adjusted to control the compression and, consequently, the tightness of the seal. This adjustability allows for fine-tuning the sealing performance based on specific operational requirements.
  • Low Friction: Gland packing materials are often impregnated with lubricants or graphite, which reduces friction between the packing and the shaft. This property minimizes wear and heat generation, extending the lifespan of the packing and the equipment.
  • Resilience: Gland packing is known for its resilience and ability to maintain sealing integrity, even in applications with shaft movement, vibration, or misalignment.
  • Cost-Effectiveness: Compared to some other sealing methods, gland packing is generally more cost-effective. It provides an efficient sealing solution without the need for expensive mechanical seals or gaskets.

Common Uses of Gland Packing:

Pumps: Gland packing is widely used in centrifugal and reciprocating pumps to prevent leakage around the pump shaft, especially in applications where mechanical seals may not be suitable due to cost or environmental conditions.

  • Valves: Gland packing is employed in various types of valves, such as gate valves, globe valves, and control valves, to maintain a reliable seal between the valve stem and the valve body.
  • Rotary Equipment: It is used in rotary equipment like mixers, agitators, and gearboxes to prevent fluid leakage along the rotating shafts.
  • Agitators and Mixers: Gland packing is commonly used in agitators and mixers to seal the shafts that agitate or mix liquids in industrial processes.
  • Steam and Boiler Applications: Gland packing is used in steam valves, steam turbines, and boiler feedwater pumps to control steam and fluid leakage in high-temperature and high-pressure environments.
  • Marine Applications: Gland packing is employed in various marine equipment, including propeller shafts, rudder posts, and steering systems, to prevent water ingress into the vessel.
  • Paper and Pulp Industry: It is used in equipment like pulp refiners and paper machines to control leakage of pulp and water.
  • Chemical and Petrochemical Industry: Gland packing is utilized in pumps, valves, and agitators handling chemicals, acids, and corrosive fluids.
  • Mining and Minerals Processing: Gland packing is used in mining equipment such as slurry pumps, crushers, and conveyors to prevent the escape of abrasive slurry or chemicals.
  • Food and Beverage Industry: In applications where hygienic sealing is required, gland packing can be used in pumps and valves handling food and beverages.

In summary, gland packing is a versatile and cost-effective sealing solution that finds widespread use in various industries to control fluid leakage in rotating and reciprocating equipment. Its adaptability, adjustability, and resilience make it a reliable choice for applications with diverse operational requirements. Proper selection, installation, and maintenance of gland packing are crucial to ensuring effective sealing and equipment performance.

Our product range is extensive and includes a comprehensive selection of gland packing, as well as valve and compression packing. This type of packing is commonly used in pumps, valves, agitators, and rotary equipment. We offer standard 8-metre coils and can also provide longer lengths upon request. Additionally, if required for resale, we can supply the packing in plain white boxes. Furthermore, we are pleased to offer a complete range of products that are manufactured across the world. Our own J A Harrison brand has been tested and proven in numerous applications, we also supply other reputable brands such as Klinger, Flexitallic, James Walker, Teadit, and Donit.

Furthermore, CW Seals offers die-formed graphite rings and preformed rings in all our grades, either separate or in sets together with a graphite top and base. We supply chevron sets in graphite, gland packing and pure PTFE, we also carry a full range of expanded PTFE sheet tape and joint seals.

Our main types are as follows, stock from 3 mm square to 25 mm square:


PTFE and also acrylic

Pure graphite

Pure graphite with Inconel wire reinforcement

Pan fibre

Pure carbon packing

Aramid fibre with PTFE lubricant

Aramid fibre with PTFE corners

GFO PTFE and also graphite

GFO with aramid corners

Flax, cotton as well as greased hemp

Valve stem in graphite and also PTFE

Glass fibre

Ramie fibres

We also stock cutting kits and packing extractor.

Gland Packing

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If you need help or a quote regarding any of our processes, materials or capabilities, please contact us on +44 (0)1903 235784 or complete the quick enquiry form below.

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Why C&W Seals?

C&W Seals constantly review our activities to allow us to provide the latest products & manufacturing techniques in the marketplace. Our highly-trained staff specialise in the manufacturer of tailor-made products to meet specific customer specifications.

By regularly benchmarking our material prices we can guarantee new and current clients the best possible prices as well as bringing our clients the latest products with our forward thinking and dedicated mindset.

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