Chloroprene rubber (CR) is available with a hardness of 60 Shore.
This material is characterized by good resistance to heat, aging, weathering and ozone.
In addition, CR has good mechanical properties and elasticity.
Furthermore it should be noted that CR may have a tendency to crystallize at very low temperatures and has poor fuel resistance.
Natural rubber (NR) is supplied from stock in the colour beige with a hardness of 45 Shore and the colour red with a hardness of 50 Shore.
NR has a very high tensile strength, elasticity, low temperature flexibility and excellent dynamic properties.
NR has moderate resistance to oil, heat, ozone and weathering.
Nitrile rubber (NBR) is available from stock in hardness 50 Shore and 70 Shore.
NBR has a very good resistance to oil, fuel and grease.
In addition NBR is characterized by a low compression set.
It should be noted, however, the ozone resistance is very bad.