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Our product range contains a wide range of Asbestos Dry Plaited Packing and Asbestos Lubricated Graphite Packing

Asbestos Dry Plaited Packing

  • Brand Name SIGMA
  • Application Asbestos dry plaited general steam and insulation packing for hot gases, oven, autoclaves etc. confo
History & knowledgebase on Asbestos Products
Some of the first uses ofasbestos insulationoccurred in the latter half of the 1800s where hot-temperature pipes were a concern. Heat insulation containing asbestos was used for the first time in 1866. A few years later in 1870, the mineral was mixed with cement for boiler coverings. By 1874, asbestos insulation products reached commercial production and were sold on a mass scale.
Asbestos Insulation helps conserve energy, lower sound volume, reduce electrical conductivity, and retain hot and cold temperatures. Asbestos, a fire-resistant mineral that was cheap, durable and a poor conductor of electricity, naturally became a key ingredient of these products.

Asbestos packingsand gaskets are made by different techniques. Yarn can be twisted or braided into different shapes conforming to packing. or gasket requirements. The braided forms or asbestos fabrics can be coated, or impregnated with different compounds.
Asbestos clothis one of the bases for sheet packing, folded, and wound packing. These packings in turn are formed into various shapes and sizes.
Sheet asbestos packing is considered one of the first applications of asbestos in the form of packing. This type of packing is available with such different combinations as wire reinforced asbestos fabric, graphite impregnated asbestos fabrics and others. Metallic products can be made from woven cloth which contains asbestos yarn-metal core. This type of construction, impregnated with the various binders, has been very popular and useful in the manufacture of gaskets and packings.
Numerous government specifications are available which pertain to
asbestos gasketsand packings. The asbestos packing or sheet requirements generally specify type and amount of fiber in proportion to binders and other additives. Parts can be used at temperatures up to about 700F. For example, for the higher temperature resistant rubber packings, the composition generally specified includes 70 to 75 per cent, by weight asbestos fiber, 9 to 16 per cent rubber, 1 1/2 to 1 per cent sulfur, and 10 to 14 per cent mineral fillers.

Braided asbestos packing, which is rubberized and graphited, is suitable for high pressure and high temperature applications. See Figure 10.1. Approximately 10 per cent rubber together with such suitable fillers as talcum and graphite is added in this type of product in order to thicken and build up the body of packings. Graphite is a very popular additive since it principally provides low frictional and binding properties
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Asbestos Lubricated Graphite Packing

  • Brand Name SIGMA

APPLICATIONS / USES :Made out of synthetic & inorganic fibers Blended with PTFE densely lubricated with high inert lubricant and with high grade graphite in core and on surface. It's recommended for use in rotary & reciprocating equipment, for saturated and super heated steam, hot water, air, gases oils steam expansion, glands, under medium pressure conditions ( For high Pressure and temperature other Sigma Compression Packings are available) recommended upto 300C (Normal Operation) ( A unique replacement to self lubricated graphite Asbestos gland Packing).

In engineering industry Gland packings play very important role.For manufcaturing gland packings asbestos is used with different combinations like graphite, Brass Metal, White Metal, Stainless Steel wire etc.
Since Asbestos dust & microscopic asbestos fibers are dangerous to human health, there is a need to replace these products by new products.
Asbestos Replacement Products are manufactured by using synthetic fibers.Synthetic fibers are man-made rather than natural fibers. Examples of synthetic fabrics include polyester, acrylic, nylon, rayon, acetate, spandex, latex, Orlon and Kevlar.
There are different types of Asbestos Replacement Products manufactured as per the need & to suit exact requirement.
Few are the examples given below

White Dry PackingThis packing is made out of synthetic fibers plaited on cover to achieve high density for general steam glands insulation, boiler lagging & sealing of oven and auto clave doors, caulking thermal insulation, furnace joints etc. (For high temperature other sigma products are available). Recommended upto 360C (Normal operation) (A unique replacement to white asbestos dry rope).

Self lubricated and Graphite PackingThis packing is made out of synthetic & inorganic fibers Blended with PTFE densely lubricated with high inert lubricant and with high grade graphite in core and on surface. It's recommended for use in rotary & reciprocating equipment, for saturated and super heated steam, hot water, air, gases oils steam expansion, glands, under medium pressure conditions ( For high Pressure and temperature other Sigma Compression Packings are available) recommended upto 300C (Normal Operation) ( A unique replacement to self lubricated graphite Asbestos gland Packing).
Synthetic & Inorganic Fibers Blended with PTFE
This packing is made out of synthetic & inorganic fibers Blended with PTFE densely lubricated with high inert lubricant and with high grade graphite in core, with brass Wire/ copper wire reinforced to increase the strength of packing. Recommended upto temperature 500 degree c. It's recommended for use in rotary & reciprocating equipment, for saturated and super heated steam, hot water, air, gases oils steam expansion, glands, under medium pressure conditions ( For high Pressure and temperature other Sigma Compression Packings are available) recommended upto 300C (Normal Operation) (Replacement to Metallic Asbestos Gland Packing).

Non Asbestos sealing packing with Stainles Steel wire, Fibre filled Lagging Rope, Gland Packing for Caustics, White Square PTFE Braided Gland Packing, Combination Packing PTFE with Polyamide Fibre Gland Packing, Yellow Aramid Braided Gland Packing for Superheated Steam & Solvents, PTFE In Zebra Braided Packing, PTFE Impregnated PTFE Packing, Self Lubricant PTFE Fibre Gland Packing, High Performance Packing is made from PTFE & Graphite Fibre Gland Packing, Self lubricating compression gland packing made out of combination of PTFE and graphite.
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