Material

NK / NR Elastomer

Natural rubber (NK/NR), also as NR/SBR blend or para rubber

Natural rubber (NK/NR) is a base elastomer with good abrasion and wear resistance and very good mechanical properties.

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Abbreviation

NK / NR

Temperature

-30 to +80 °C

Strength

Abrasion & mechanics

Application

dynamic · food

Overview

NK / NR in use

Natural rubber (NK/NR) is often supplied as an NR/SBR blend by adding styrene butadiene rubber. This gives the material outstanding abrasion resistance, very good mechanical properties and robust wear resistance for demanding applications.

Its good suitability for filling applications in the food industry and its ability to withstand dynamic loads make NK/NR a versatile base elastomer.

Properties

Properties of NK / NR

Very good abrasion resistance
Very good wear resistance
Very good mechanical properties
Ideal for dynamic applications
Ideal for filling applications in the food industry
Not recommended for contact with chemical substances
Not recommended for direct UV or ozone exposure
Temperature resistant, as a rule, from -30 °C to +80 °C

Chemical resistance

Resistance of NK / NR

1 = very good 2 = good 3 = limited 4 = poor 5 = very poor

Medium	Rating	Description
Mineral oils and greases	5	Very poor resistance
Sodium peroxide	3	Limited resistance
Fuels	5	Very poor resistance
Brake fluid	5	Very poor resistance
Grape must & wine	1	Very good resistance
Milk	1	Very good resistance
Acids and alkalis, dilute	4	Poor resistance