|NR – NATURAL
||NBR – NITRILE
||EPDM – ETHYLENE PROPYLENE
|Good low temperature properties and long flex life. High resilience, elongation and tensile strength, and wide hardness range. Poor resistance to ozone, heat, oil and general weathering.
||Resistant to attack from mineral oils, petroleum solvents, fair resistance to heat and aging. Relatively poor cold resistance. Cannot be used where weather resistance is required.
||Excellent resistance to weather and ozone. High tensile strength. Good low temperature properties. Resistant to non-flammable hydraulic fluids (Skydrol). Non-resistant to mineral oils.
|CR – NEOPRENE
||VMQ – SILICONE
||FKM – FLUOROELASTOMER
|Good heat, flame, aging and weather resistance. Moderate chemical and oil resistance. Long flex life. Poor resistance to aromatic hydrocarbons.
||Excellent electrical properties, resistant up to very high temperatures and flexible to very low temperatures. Poor tensile and abrasion resistance compared to other elastomers.
||Excellent long term heat resistance and aging. Excellent hot oil, aliphatic and aromatic hydrocarbon resistance. Not very elastic. High cost polymer.
|Non-oil resistant, economically priced synthetic rubber – especially noted for its low water absorption properties.
||Outstanding tensile and abrasion qualities – excellent resistance to wear, ozone, oxygen, kerosene & gasoline.
||In addition to its ability to withstand extreme temperatures, it is also fuel and oil resistant.