Elastomer

Rubber Type-NR

Natural Rubber (cis polyisoprene)

Main Advantages

  • Good Dynamic Prop.
  • Good tensile and tear strength
  • Good abrasive resistance

Limitations

  • Poor resistance to chemicals and oil substances
  • No longtime exposure to sunlight, ozone and heat

Rubber Type-SBR

Styrene-butadiene Rubber

Main Advantages

  • Good tensile strength, dynamic prop. And abrasive resistance
  • Good substituent for NR ( but sometimes more ccst-efficient)

Limitations

  • Poor resistance to chemicals and oil substances
  • No longtime exposure to sunlight, ozone and heat

Rubber Type-BR

(poly-) Butadiene Rubber

Main Advantages

  • Excellent dynamic properties
  • Good cold resistance
  • Good tear strength

Limitations

  • Poor resistance to chemicals and oil substances
  • No longtime exposure to sunlight, ozone and heat

Rubber Type-EPDM

Ethylene Propylene Diene Monomer

Main Advantages

  • Excellent resistance to ozone, oxidants and weather (water) conditions
  • Good heat resistance
  • Excellent insulator
  • Good chemical resistance (not oil)

Limitations

  • Poor resistance to chemicals and oil substances
  • No longtime exposure to sunlight, ozone and heat

Rubber Type-CR

Chloroprene Rubber (Neoprene)

Main Advantages

  • Good resistance to ozone, weather conoltions (water) and sunlight
  • Good chemical and medium oil resistance
  • Good high temperature resistance
  • Good all-round rubber

Limitations

  • More expensive then general purpose synthetic rubbers
  • No resistance to strong oxidizing acids, esters, ketones, chlorinated and aromatic hydrocarbons

Rubber Type-NBR

(Acrylo-) Nitrile Butadiene Rubber

Main Advantages

  • Good oil and solvent resistance
  • Good heat resistance
  • Good mechanical properties
  • Good resistance to gaspermeability

Limitations

  • Not good resistance to ozone, ketones, esters, aldehydes and chlorinated hydrocarbons
  • Higher price only justified when oil resistance is required

Rubber Type-HNBR

Hydrogenated Nitrile Butadiene

Main Advantages

  • Very good heat and low temp. resistance

Limitations

  • High cost

Rubber Type-HR

Isobutene-Isoprene Rubber (butyl rubber)

Main Advantages

  • Excellent resistance to gaspermeability
  • Good resistance to chemical, ozone, weather and oil

Limitations

  • Intermediate mechanical properties

Rubber Type-CSM

Chlorosulphonated Polyethylene (Hypalon

Main Advantages

  • Good heat resistance
  • Good ozone and weather(water) resistance
  • Good chemical resist.
  • Color-proof
  • Excellent abrasive resistance

Limitations

  • Intermediate oil resistance