SGT is the premier stockist and trader of Natural/ Synthetic Rubber and rubber products in the Middle East. We source rubber and have excellent relationships with the best rubber manufacturers in the world.

SGT deals in:

  • Natural Rubber

    Natural Rubber (NR) is produced from latex obtained from rubber trees in plantations. The outstanding strength of natural rubber has maintained its position as the preferred material in many engineering applications. It has a long fatigue life and high strength, even without reinforcing fillers. Other than for thin sections, it can be used to approximately 100°C, and sometimes above. It can maintain flexibility down to -60°C if compounded for the purpose. It has good creep and stress relaxation resistance and is low cost. The most important forms in which NR is processed are the following:

    • Rubber Sheets

      Two types of Sheet Rubber are produced and marketed in the international market, namely the Ribbed Smoked Sheets (RSS) and the Air Dried Sheets (ADS). Among these two types, Ribbed Smoked Sheet is the most popular and is available for consumption. There exist different grades of Ribbed Smoked Sheets rubber, namely RSS 1, RSS 2, RSS 3, RSS 4 and RSS 5.

      • Ribbed Smoked Sheet (RSS)

        Grade Technical Specification Areas of Consumption
        RSS1 Dry, clean, strong, sound and evenly smoked. Free from moulds, blemishes, specks, rust, blisters, sand, etc. Slight specks might be seen Tubes
        RSS2 Dry, clean, strong, sound and evenly smoked. Free from moulds, blemishes, specks, rust, blisters, sand , etc. Extruded Hoses, Quality Footwear Items, Tyres, Tubes, Tread Carcasses
        RSS3 Dry, strong and free of blemishes, blisters, sand, dirty packing, etc Tyre and ADV Tyres, Extruded Hoses, Footwear
        RSS4 Dry, firm and free of blemishes, blisters, sand, etc. to the extent shown in samples Tyre and ADV Tyres, Extruded Hoses, Footwear
        RSS5 Dry, firm and free of blemishes to the extent shown in samples Hand made Hoses,Re treading Materials

        Ribbed Smoked Sheet (RSS) is marketed based on visual assessment of quality. Grading of RSS is done based on the grade descriptions and specifications defined in the 'The Green Book" of International Rubber Quality and Packing Conferences as RSS1, RSS2, RSS3, RSS4, and RSS5. RSS of superior quality are processed from fresh field latex, adopting modern processing methods.

    • Blocked Rubber

      TSR is processed natural rubber in block forms, adopting cost-effective and modern processing methods as per the technical parameters laid down by the International Standards Organization (ISO). It is a state-of the- art marketable form of natural rubber, produced from latex and field coagulum. TSR is marketed in six well defined marked grades with uniformity and consistency in quality, to meet the requirements of global consumer. The standard sizes and compact packing enables mechanized handling and containerization, thereby making the transportation trouble free and economical.

      TSR CV TSR L TSR 5 TSR 10 TSR 20
      Parameter 5 CV XL 5L 5 10 10CV TSR 20 TSR 20CV
      Dirt (% wt, max) 0.04 0.02 0.04 0.04 0.08 0.08 0.16 0.16
      Ash (% wt, max) 0.60 0.40 0.40 0.60 0.60 0.60 0.80 0.80
      Nitrogen (% wt, max) 0.60 0.50 0.60 0.60 0.60 0.60 0.60 0.60
      Volatile Matter (% wt, max) 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80
      Initial Plasticity (min) NA 35 35 30 30 NA 30 NA
      PRI index (min) 60 60 60 60 50 50 40 40
      Colour Lovibond Scale(individual value, max) NA 4.0 6.0 NA NA NA NA NA
      Mooney Viscosity**(ML, 1+4, 100°C) 60+7/-5 NA NA NA NA 60+7/-5* NA 65+7/-5*

      Grade Technical Specification Areas of Consumption
      TSR CV Produced from good quality field latex and is viscosity stabilized at a narrow range High quality products with superior dynamic properties. Tyres, Injection Bottle Caps, Adhesives.
      TSR L Produced from good quality field latex Transparent Products, Injection Bottle Caps, Syringe Heads. Large Industrial Rollers. Aero Tyros, Hot Water Bottles, Adhesive Solutions, Sports Footwear, Tennis Balls
      TSR 5 Produced from field latex or high quality field coagulum Moulded and Extruded products like Auto components, Engine Mountings, Bridge Bearings, Rubber Linings, Conveyor Belts, Tubes, Engine Mountings, Tank Linking, Brake Seals, Hoses
      TSR 10 Produced from high quality field coagulum Cushion Gum Stocks, Joint Rings by Injection Molding, Raincoat Proofing, Micro Cellular Sheets for Upholstery and Packing, Conveyer Belts, Footwear, Tyre Tread Materials
      TSR 20 Tailor made grade of rubber, produced from quality field coagulum All types of Automotive Tyres and Re treading Material, Bicycle Tyres, Raincoat Proofing, Micro Cellular Sheets for Upholstery and Packing, Conveyor Belts, Footwear, Mats

    • Latex Concentrates

      Processing of natural rubber latex into high quality latex concentrate of 60% dry rubber content is done through centrifugation. Centrifuging involves the separation of preserved field latex into two fractions, one containing the concentrated latex of more than 60% dry rubber and the other containing 4-6% dry rubber. Centrifuged latex is today available commercially in two different verities with high ammonia (min.0.6% of ammonia) and low ammonia (max. 0.3% of ammonia). The former is preserved solely with ammonia and later contains one or more preservatives besides ammonia. LA latex has several advantages which include better quality, lower cost of production by way of savings in preservatives, acid and low cost of effluent treatment.

      Grade & Applications:

      • High Ammonia (HA) - Foam products, dipped goods, adhesives, elastic thread, household and industrial gloves, balloons, rubber bands and finger caps.
      • Low Ammonia (LATZ) - Preferred for all applications when de ammonia is necessary for product manufacture.
      • Double Centrifuged - High technology dipped products such as condoms, examination gloves, surgical gloves, catheters etc.

    Natural Rubber Plantation

    • Uses

      The demand for Natural Rubber (NR) always remains high. Following are some end products made from Natural Rubber.

      • Tyre
      • Conveyer Belts
      • Rubber Mats
      • Automotive Parts
      • Rubber Intermediate
      • Adhesive
      • Coating Material
      • Surgical Gloves
      • Condoms
      • Industrial Gloves
      • Balloon
      • Elastic Thread
      • Rubber Foam
      • Coir Foam
      • Carpet Backing

  • Synthetic Rubber

    Synthetic rubber is processed and vulcanized in the same way as natural rubber. Synthetic rubber is produced in different ways. Synthetic rubbers are artificially produced materials with properties similar to natural rubber. Most are obtained by polymerization or polycondensation of unsaturated monomers. A wide range of different synthetic rubbers have emerged, reflecting the various different applications and the chemical and mechanical properties they require. Co-polymerization of different monomers allows the material properties to be varied across a wide range.

    Polymerization can take place under hot or cold conditions, which result in hot polymers (hot rubber) or cold polymers (cold rubber). Synthetic rubbers are marketed as compressed bales and square blocks. They are also produced in the form of powder rubber, talcum-coated chips, granules and as latex concentrates in liquid form.

    • Quality

      The benefits compared with natural rubber include better oil and temperature resistance and the possibility of a product with an extremely constant quality. Synthetic rubbers made from butadiene (polybutadiene copolymers) rank as the most important synthetic rubbers produced.

    • Grades

      The following list indicates some of the most important synthetic rubbers along with their properties in comparison with natural rubber.

      • Styrene butadiene rubber (SBR)

        General purpose rubber made up of different types; better abrasion resistance, lower elasticity, poorer low-temperature behavior, better heat and aging resistance, excellent electrical insulation material similar to rubber.

      • Polybutadiene rubber (BR)

        Poor processing properties mean that BR is not used on its own, blended with SBR or NR, abrasion-resistant, good elasticity, flexible at low temperatures

      • Isoprene rubber (IR)

        Properties largely comparable with natural rubber, more uniform, cleaner, transparent.

      • Acrylonitrile butadiene rubber (NBR)

        Oil and fuel resistant, good heat distortion temperature properties, abrasion resistant

      • Chloroprene rubber (CR)

        Flame retardant, resistant to grease, oil, weathering and aging, abrasion resistant

      • Butyl rubber (IIR)

        Low permeability to gases, resistant to aging, ozone and chemicals, good mechanical properties, abrasion resistant, good electrical insulation properties.

    • Storage

      Duration of storage varies depending on the type of synthetic rubber. For example, a range of 6 - 36 months if the ideal conditions recommended by the manufacturer, such as a storage temperature between 10 and 25°C, are observed. Synthetic rubber must be stored dry, some synthetic rubbers must be stored cool and they are to be protected from direct sunlight. Recommended storage duration for synthetic rubber, in particular SBR:

      • Initial storage 5 years
      • Extended storage 2 years

    • Uses

      Like natural rubber, synthetic rubber has a wide range of applications, such as in the tire industry (car, aircraft and bicycle tires), drive belts, hoses, medical equipment, seals, floor coverings, conveyor belts, and molded parts.

      The following list shows the operating temperatures and applications for some important types of synthetic rubber.

      • Styrene butadiene rubber (SBR)
        -40 to 100°C
        Tire industry (treads and carcasses), conveyor belts, seals, technical rubber products

      • Polybutadiene rubber (BR)
        -80 to 90°C
        Tires, conveyor belts, clutches, engine bearings, technical products of all types, drinking water seals

      • Isoprene rubber (IR)
        -40 to 130°C
        Technical products of all types, especially construction sections, cooling and heating hoses for vehicles, high-performance tires, foodstuffs utensils

      • Acrylonitrile butadiene rubber (NBR)
        Operating temperature: up to approx. 110°C
        Motor vehicle parts, oil and fuel hoses, technical products of all types, plates and mats, rollers, seals and for foodstuffs such as milk

      • Chloroprene rubber (CR)
        -40 to 110°C
        Conveyor belts, clutches, drive belts, technical products of all types, pneumatic suspension systems, cables

      • Butyl rubber (IIR)
        -40 to 150°C
        Automotive hoses, tire inner liners, seals, membranes, rubberized fabrics, steam hoses, cable insulation

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