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Daniel Repking
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Rubber cylinders

EPDM (rubber) cylindersEthylene-propylene-diene monomer has similar properties to NBR but a lower wear resistance and ultimate strength. However, EPDM has a better chemical resistance.

This type of rubber is used for cylinders where heat, chemicals, hot water, steam and exposure to the weather could cause problems. Typical applications are those involving certain chemicals.

Nitrile-butadiene rubber is a copolymerisation product of acrylonitrile and butadiene. NBR resists swelling when in contact with oils, greases and fuels. It is used where such properties are advantageous – primarily in general engineering applications.

Wrong choice! However, owing to its poor resistance, NBR is the wrong choice for cylinders that come into contact with ketones and esters, or aromatic and chlorinated hydrocarbons.

NBR – the technical parameters:

  • Somewhat inferior properties to those of natural rubber
  • Can be used over a temperature range from -40 to +120°C
  • Relatively resistant to wear and ageing
  • Used as an oil- and grease-resistant rubber grade when good grip is essential

Sponge rubber grade: This material is so soft that it readily adapts to many different shapes and can therefore apply an even coating. We can supply very soft cylinders, e.g. for coating timber mouldings, etc., in a sponge rubber grade.

Sponge rubber cylinders, rollers with sponge rubber coatingInternorm recommends sponge rubber with porosity grades from 1 to 3 for applications where very soft rollers are necessary, e.g. stripping and painting of timber mouldings, boards, etc. The woodworking industry in particular provides countless applications for such products.