Synthetic Rubber

Acrylonitrile Butadiene Rubber

Nitrile rubber (NBR), is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene.

Rising ACN content improves polarity, oil resistance, fuel resistance, heat resistance, hardness and gas retention whereas elasticity, low temperature flexibility and resilience are more or less impaired.

Grades of NBR are as below:

  • Low ACN Content NBR 18-22%
  • Med ACN Content NBR 28-34%
  • High ACN Content NBR 38-42%
  • Ultra High ACN Content NBR 45-49%
  • Hydrgenated NBR (HNBR)
  • Carboxylated NBR (XNBR)

Styrene Butadiene Rubber

Styrene-butadiene rubber (SBR) is a synthetic rubber copolymer consisting of styrene and butadiene. It has good abrasion resistance and good aging stability when protected by additives, and is widely used in car tires, where it may be blended with natural rubber.

Grades of SBR are as below:

  • SBR 1502
  • SBR 1712 (Oil Extended)
  • High Styrene Resin

Uses: SBR is used widely in pneumatic tires, shoe heels and soles, gaskets and even chewing gum. It is a commodity material which competes with natural rubber. Also, it is used in Foamed products, Belting, Hose & Tubing, Sponge, Adhesive.

Ethylene PropyleneDiene Monomer

The E refers to ethylene, P to propylene, D to diene. The M class includes rubbers having a saturated chain of the polymethylene type. Dienes currently used in the manufacture of EPDM rubbers are dicyclopentadiene (DCPD), ethylidene norbornene (ENB), and vinyl norbornene (VNB). EPDM rubber is closely related to ethylene propylene rubber (EPM).

EPM is a copolymer of ethylene and propylene whereas EPDM is a terpolymer of Ethylene, Propylene and a ‘Diene-Component’.

Grades of EPDM are:

  • Oil Extended EPDM
  • Non-Oil Extended EPDM

Uses: EPDM rubber is used in seals, glass-run channels, radiators, garden and appliance hose, tubing, washers, belts, electrical insulation, vibrators, and speaker cone surrounds. It is also used as a medium for water resistance in electrical cable-jointing, roofing membranes, geomembranes, rubber mechanical goods, plastic impact modification, thermoplastic, vulcanizates, and many other applications.

The main properties of EPDM are its outstanding heat, ozone and weather resistance. The resistance to polar substances and steam are also good. It has excellent electrical insulating properties.

Polychloroprene Rubber

Neoprene or Polychloroprene (CR) is a family of synthetic rubbers that are produced by polymerization of Chloroprene.

Grades of CR are:

  • General Purpose grades
  • Adhesive grades
  • Latex grades

Uses: Neoprene’s chemical inertness makes it well suited for industrial applications such as gaskets, hoses, and corrosion-resistant coatings. It can be used as a base for adhesives, noise isolation in power transformer installations, and as padding in external metal cases to protect the contents while allowing a snug fit. It resists burning better than exclusively hydrocarbon based rubbers, resulting in its appearance in weather stripping for fire doors and in combat related attire such as gloves and face masks.


Butyl rubber is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for Isobutylene Isoprene Rubber.

Grades of IIR are:

  • Regular Butyl
  • Bromo Butyl
  • Chloro Butyl

uses: Butyl rubber is used for the bladders in basketballs, footballs, soccer balls and other inflatable balls to provide a tough, airtight inner compartment. IIR sealant is used for rubber roof repair and for maintenance of roof membranes especially around the edges. Butyl rubber is one of the most robust elastomers when subjected to chemical warfare agents and decontamination materials. It is a harder and less porous material than other elastomers, such as natural rubber or silicone, but still has enough elasticity to form an airtight seal, hence it is used to create seals in gas masks and other protective clothing. It is used in Adhesive, Sealent, Tank lining, Fibre proofing etc.


Polybutadiene Rubber

Polybutadiene (PBR) is a synthetic rubber that is a polymer formed from the polymerization process of the monomer 1,3-butadiene.

Grades of PBR depend on the catalysts used in its production which are:

  • Neodymium
  • Cobalt
  • Nickel
  • Titanium
  • Lithium

Uses: Polybutadiene is largely used in various parts of automobile tires; the manufacture of tires consumes about 70% of the world production of polybutadiene,[16][17] with a majority of it being high cis. The polybutadiene is used primarily in the sidewall of truck tires, this helps to improve fatigue to failure life due to the continuous flexing during run. As a result, tires will not blow out in extreme service conditions. Polybutadiene rubber may be used in the inner tube of hoses for sandblasting, along with natural rubber. The main idea is to increase resilience. This rubber can also be used in the cover of hoses, mainly pneumatic and water hoses. This rubber can also be used in railway pads, bridge blocks, etc.


Polyurethane (PU) is polymer composed of a chain of organic units joined by carbamate (urethane) links. Polyurethane polymers are formed by combining two bi- or higher functional monomers. One contains two or more isocyanate functional groups and the other contains two or more hydroxyl groups.

Grades of PU are:

  • Millable
  • Thermoplastic
  • Castable

Uses: Used in solid industrial tyres for its ‘high abrasian’ property, also used in Pipes for transferring coal slurry, used to make Rollers, Bushes and Flexible coupling.

Silicone Rubber

Silicone rubber is an elastomer (rubber-like material) composed of silicone containing silicon together with carbon, hydrogen, and oxygen.

Grades of Silicone Rubber are:

  • General Purpose
  • Transparent Food Grade
  • Moulding & Extruding Grade
  • Platinum Grade

Uses: Once mixed and coloured, silicone rubber can be extruded into tubes, strips and solid cord. It is used for Insulated Wires & Cables for generation and transmission of electricity, Shaft Seal, Gaskets, Bushing, O-ring Diaphragm, Baby bottle nipples, Conveyor belts for food and a lot of medical applications. Its applications are wide from automotive applications to a large variety of cooking, baking, and food storage products, to apparel, undergarments, sportswear, and footwear; to electronics; to home repair and hardware, and a host of unseen applications.

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