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Mechanical Packing

Critical Valve Sealing Application High Temperature / Thermal Cycling / Fugitive Emissions

CHESTERTON 1600

Advanced Valve Stem Packing

• Superior emissions control over thousand of cycles
• Fire safe : Successfully passed API 589 standards at API 607 temperatures and pressures as tested by an independent laboratory
• Easy installation and extrusion resistance in a single-spool packing
• Proven in high pressure/high temperature steam service

CHESTERTON 5500

Flange Bolt Disc Springs

Bolted, gasketed joints that are subjected to mechanical shock, pressure surges or thermal expansion and contraction are prone to leakage. Disc springs, because they are an elastic mechanical element, compensate for these factors by maintaining bolt force under these conditions.

CHESTERTON 5800

WedgeSeal with carbon yarn and rings

• Graphite packings sets for fugitive emissions
• Designed specifically for air-operated control valves
• Reduced stem friction, lower actuator tone
• Passes API 589 Fire Test

Pump and Valve Packings

1400R

Chesterton 1400R is a unique reinforced braided graphite tape packing with a corrosion inhibitor, The carbon yarn reinforcement is provided within the graphite tape yarn, as well as the braided construction. 1400R forms a homogeneous mass under gland pressure, so that leakage cannot penetrate the packing set. The all carbon/graphite set withstands higher shaft speeds while limiting shaft friction.The structural carbon fiber reinforcement prevents extrusion when 1400R sets are installed in valves at higher pressures. In addition to its excellent sealing capabilities in rotating equipment, 1400R is a superior valve sealing material. This dual purpose design makes it a truly universal mechanical packing.

477-1

Chesterton 477-1 carbon fiber packing combines a new yarn formulation with superior blocking agents.New low modulus yarn provides the strength associated with continuous filament carbon fibers plus greater flexibility. This makes 477-1 strong yet pliable, without the brittleness of conventional carbon packings. 477-1 incorporates a high purity dispersion of inorganic platelets which prevent penetration of gases or liquids through the packing. Interbraid construction locks these blocking agents within the packing ring.

1400

Chesterton 1400 is a pump and valve packing constructed from graphite tape which is twisted, braided and treated with corrosion inhibitors and a blocking agent. 1400 forms a homogenous mass under gland pressure for maximum sealability.

Pump Packings

477-1T

Chesterton 477-1T is a tough yet pliable continuous filament carbon yarn packing which is impregnated throughout with PTFE to provide a non-contaminating, non-staining carbon yarn packing. 477-1T was developed for the tough applications in the pulp and paper industry. It is specially designed to be used in High Pressure Feeders, Pre-Steaming Vessels and applications that are moving abrasive slurries. The combination of the carbon yarn and PTFE dispersions increases the 477-1T chemical resistant properties when up against strong caustic and acid mediums.477-1T is also an excellent bottom anti-extrusion end ring in combination with 1400R in rotating equipment. This combination is ideal when attempting to reduce or eliminate flush water from a stuffing box. For more detail in this area go to the Water Management Section of this catalog.

WATER MANAGEMENT PROGRAM

CMS 2000

Chesterton CMS 2000 Maintenance System is the revolutionary advanced stuffing box leakage control sealant made of high purity, reinforced fiber available in graphite and a white non-staining formulation.CMS 2000 pump sealant is provided in bulk form for initial loading and in cartridges for final sealing under pressure to eliminate voids. Cartridges are then used for all subsequent resealing. Chesterton offers two CMS 2000 injection systems.The Manual Injection System which comes in its own case equipped with the manual hydraulic unit, a three foot hose, a one foot hose, a quart of hydraulic fluid, male and female flow-through fittings, a spanner wrench and a CMS 2000 volume calculator.

1727

Multi-Lon® Multi-Lon is a synthetic pump packing, unique to Chesterton, designed specifically for general service pump applications. It is able to deliver performance equal to synthetics but with the pliability of asbestos. Unlike the first generation of synthetic packings,Multi-Lon does not suffer from limitations that prevent general service use. It does not cause severe scoring like many synthetic yarns, does not cause electrolytic pitting like carbon or graphite yarns and does not have the shaft speed limitations or the elongation/extrusion problems often associated with PTFE fiber yarns. Multi-Lon consists of interbraided continuous synthetic thermoset fibers, immunized with PTFE lubricant and a special silicone free break-in, sacrificial lubricant.

1400R

Chesterton 1400R is a unique reinforced braided graphite tape packing designed to handle both pump and valve applications. There is a two tiered reinforcement system utilized within the 1400R to make it extrusion resistant and capable of withstanding high operating pressures. Each strand of graphite is reinforced with a carbon filament, and the overall braid is reinforced with additional strands of carbon yarn.The outstanding heat conductivity and extreme temperature resistance of this graphite packing make it an excellent option for water management programs. Because of its thermal characteristics, this packing is capable of sealing many applications with little or no leakage, minimizing the amount of flush required. Unlike synthetic type yarns, this graphite/carbon packing is not strictly dependant on the cooling and lubrication provided by a flush.The compressible graphite tape yarn combined with the carbon reinforcement make this packing a good sealing option on equipment with some sleeve, shaft or stuffing box wear or imperfections.This can mean extended service time before a pump has to be removed or a costly sleeve or shaft replacement.In addition to its excellent sealing capabilities in rotating equipment, 1400R is a superior valve sealing material. This dual purpose design makes it a truely universal mechanical packing.

valve-packings

1600/1601

Chesterton 1600 features advanced construction for superior leakage control and high integrity. Layers of graphite tape are plied into compact strands. Each strand is reinforced with an Inconel* wire mesh covering. Strands are square plait braided to form a dense, but pliable packing. It is further enhanced with blocking agents.The packing’s exterior is then densely impregnated with lubricating agents to reduce stem friction and a corrosion inhibitor to prevent pitting.CHESTERTON 1601 is manufactured with the same advanced construction as the 1600. It offers the identical performance but is uniquely formulated to meet the purity requirements of the Nuclear Industry. Certificate of Compliance and Test Analysis available upon request.

401

CHESTERTON 401 is constructed with wire-reinforced braided yarn which surrounds a flexible and resilient asbestos-free core. The non-asbestos jacketed yarn construction encapsulates the wire reinforcement in the yarn, preventing stem wear and scoring. This special construction makes 401 an economical, non-asbestos, general service valve stem packing for use in high-temperature and high-pressure applications.

General Service Packings

1760/1761

Chesterton 1760 is a unique packing consisting of a PTFE yarn lubricated with graphite particles. The finished packing is further lubricated with a special silicone oil for quick break-in.Chesterton 1761 is a non-staining, white version of 1760, with PTFE yarn lubricated with a unique heat conducting compoundwhich gives 1761 the heat dissipating qualities of a graphite packing.

412-W

Chesterton 412-W combines a newly developed synthetic composite yarn with a specially formulated break-in lubricant. Continuous filament center provides 10 times the tensile strength of typical packing fibers. Fibrous covering enables 412-W to absorb twice the PTFE blocking agents of conventional packings. Chesterton interbraid construction helps prevent migration ofblocking agents so that 412-W maintains density to prevent wicking throughout its service life. 412-W also incorporates a purified colloidal lubricant to prevent failure at start-up and maintain continuous lubrication throughout the break-in process.

1760 PTFE/Graphite

Chesterton 1760 is a unique packing consisting of a PTFE yarn lubricated with graphite particles. The finished packing is further lubricated with a special silicone oil for quick break-in.

1830 Graphite/PTFE

Chesterton 1830 is an advanced expanded graphite PTFE packing made up of filaments developed to meet rigid specifications. Use in pumps, valves, agitators, mixers, and other rotating equipment. PTFE resin is combined with graphite and expanded by using the latest technologies, resulting in a high-quality filament.

412-W Multi-Service

Chesterton 412-W combines a newly developed synthetic composite yarn with a specially formulated break-in lubricant. Continuous filament center provides ten times the tensile strength of typical packing fibers. Fibrous covering enables 412-W to absorb twice the PTFE blocking agents of conventional packings. Chesterton interbraid construction helps prevent migration of blocking agents so that 412-W maintains density to prevent wicking throughout its service life. 412-W also incorporates a purified colloidal lubricant to prevent failure at start-up and maintain continuous lubrication throughout the break-in process.

Tank Covers / Hatches / Lids

Lid-Lock PTFE-Based Packing

Chesterton’s Lid-Lock packing is designed specifically to handle the unique sealing requirements of the tank covers, hatches and lids found on marine- and rail-based chemical transport equipment. In an industry where the variety of cargoes being shipped can vary on a frequent basis, it is important to have a universally compatible product sealing the tank lids.The Lid-Lock starts with a rubber core overwrapped with a high quality PTFE film. This core is then overbraided with the non-absorbent, chemically resistant polypropylene yarn. The combination of the two gives this packing its excellent compressibility and elasticity. This flexible core is then wrapped with a double layer of high quality PTFE film. Finally, the Lid-Lock is overbraided with a tough, pure PTFE filament jacket that protects the PTFE film barrier from damage.

Marine

Application Specific | Stern Tubes/ Rudder Post / Shaft Bulkhead Glands Stern-Lon Flax

 

Chesterton 329 is square plait braided to provide an unusually flexible, formable packing. The base fiber in Stern-Lon is a long-fibered, roved flax of the highest quality. The packing is graphite free to avoid galvanic corrosion on shafts. 329 is first impregnated with concentrated PTFE dispersion to promote non-flowing lubricity and to retard degradation. This is followed with a plasticizing “break-in” lubricant which assures compressibility, flexibility, and good packing-to-shaft contact. Large sizes need not be hammered into place. Finally, in order to minimize frictional attrition, a finely divided fluorocarbon powder is embedded into the surface of the packing. 329 produces little or no shaft or sleeve wear.

Food Grade

425 Food Grade

Chesterton 425 is manufactured with a virgin PTFE filament and a white oil lubricant. It is perfectly suited for use in valves and also in rotating equipment such as blenders, mixers, agitators, and other rotating equipment. Chesterton 425 complies with the USDA requirements for minimal food contact and FDA specification 21 CFR, 178.3620(a) for lubricants with incidental food contact as well as 177.1550 perfluorocarbon resins.