CR - versatile elastomer for technical requirements
What is chloroprene rubber (CR)?
Chloroprene rubber (CR), often known by the trade name „neoprene“, is a synthetic rubber produced by polymerising chloroprene (2-chloro-1,3-butadiene). Its balanced combination of mechanical strength, ageing resistance and chemical resistance makes it one of the most versatile elastomers for technical applications.
These properties make CR particularly suitable for the production of Moulded rubber parts, that have to withstand high mechanical and thermal loads. In addition, CR is often used in Plastic composite parts and Fabric composite parts where flexibility and resistance to environmental influences are required. Also in Metal composite parts is used in CR, especially when a durable and reliable seal is required.
What properties does CR offer?
- Good resistance to weathering, ozone and ageing even without special protective additives
- Average to good Oil- and fuel resistance, better than natural rubber (NR), but less than NBR or FKM
- Temperature resistance from approx. -40 °C to +100 °C
- High mechanical strength and good abrasion resistance
- Self-extinguishing due to the chlorine content, therefore flame-retardant
- High elasticity and good cushioning properties
- Good adhesion to metals and textiles, ideal for Rubber-Metal Composite Parts and Rubber-fabric composite parts
What are the areas of application and material combinations?
CR is often used in Seals, Sealing lips, hoses, conveyor belts, Vibration dampers and cable sheathing. In the automotive industry, it is used for V-belts, sleeves and hoses. Due to its flame resistance, it is used in safety-relevant areas such as mining, railway and shipbuilding as well as in protective clothing. In combination with fabric reinforcements or Metal inserts The result is durable, resilient components for industrial use.
