Elastomers − Specification

Natural rubber NR

• High strength with good abrasion resistance.
• Suitable for use with hot/cold water, ammonia, ethylene glycol, dilute acids and alkalis.

Nitrile rubber NBR

• For service with all types of oils
• Plus mineral- or water/glycol-based hydraulic fluids.

Chloroprene CR

• General purpose elastomer, usually known as neoprene.
• Suitable for use with many media.
• Largely unaffected by sunlight and atmospheric ageing.

Butyl rubber IIR

• Isobutylene-isoprene (IIR), generally know as butyl rubber.
• Very low gas permeability.
• Suitable for vacuum and high pressure gas applications.

Ethylene propylene EPDM (terpolymer)

• Excellent resistance to water and steam.
• Excellent resistance to weathering and ozone. 

Silicone VMQ, PVMQ, MQ, PMQ

• Good resistance to heat, weathering and compression set.
• Excellent electrical properties.

Fluorosilicone rubber FMQ 

• Resists mineral and synthetic oils.
• Used in defence and aerospace duties where resistance is needed to fuels and hydraulic fluids.

Fluoroelastomer FKM (dipolymer)

• Operate efficiently under severe chemical conditions.
• Work at higher temperatures where many other seal materials cannot survive.

Kalrez^® perfluoroelastomer FFKM

• Combines the resilience and sealing ability of rubber
• With almost universal chemical resistance.
• Temperature capabilities up to 316°C.