NBR - E6645 - Elastomer Engineering - Bladders

Identification & Functionality

Features & Benefits

Product Background: Acrylonitrile butadiene rubber (NBR), usually shortened to nitrile or NBR, was developed in 1941 as the first oil resistant rubber. NBR rubber grades with high acrylonitrile content have better oil resistance, whereas low acrylonitrile content gives better low-temperature flexibility and resilience.

Advantages of NBR

NBR has moderate physical properties but good abrasion resistance. It is extremely versatile, reliable and offers reasonable resistance to petroleum oil, crude oil, water, gasoline and some hydraulic fluids. Offering great abrasion and compression set resistance, NBR is a cost-effective sealing solution. Because of this, NBR is a popular sealing material for a wide range of applications.

Disadvantages of NBR

Some disadvantages of NBR include high gas permeability. NBR’s ozone resistance and electrical properties are also poor. NBR is not suitable for use with polar solvents and its poor flame resistance can be a disadvantage. Certain grades of nitrile rubber can be compounded with PVC to improve aging, flame, petrol and ozone resistance which combats some of the disadvantages listed above. Indeed, carboxylated grades of nitrile rubber (XNBR) have enhanced physical properties and higher temperature resistance.

Applications & Uses

Markets: Building & Construction,
Industrial
Applications: Building & Construction — Building Materials
Pipes & Plumbing
Industrial — Chemical & Industrial Manufacturing
Equipment & Parts
Plastics & Elastomers End Uses: Bladders,
Diaphragms,
Gaskets,
Hoses,
O Rings,
Pipe Liners
Typical Applications: Accumulator bladders

Diaphragms

Gaskets

Hose

Liners

O-Rings

Seals

Properties

NBR E6645