Nitrile / NBR (Acrylonitrile butadiene)
Nitrile, chemically, is a copolymer of butadiene and acrylonitrile. Acrylonitrile content varies in commercial products from 18% to 50%. As the nitrile content increases, resistance to petroleum base oils and hydrocarbon fuels increases, but low temperature flexibility decreases. Due to its excellent resistance to petroleum products, and its ability to be compounded for service over a temperature range of -35°C to +120°C (-30°F to +250°F), nitrile is the most widely used elastomer in the seal industry today. Also many military rubber specifications for fuel and oil resistant O-rings require nitrile based compounds. It should be mentioned that to obtain good resistance to low temperature, it is often necessary to sacrifice some high temperature resistance. Nitrile compounds are superior to most elastomers with regard to compression set, tear, and abrasion resistance. Nitrile compounds do not possess good resistance to ozone, sunlight, or weather. They should not be stored near electric motors or other ozone generating equipment. They should be kept from direct sunlight. However, this can be improved through compounding. NBR is the standard material for hydraulics and pneumatics. NBR resists oil-based hydraulic fluids, fats, animal and vegetable oils, flame retardant liquids (HFA, HFB, HFC), grease, water, and air. Special low-temperature compounds are available for mineral oil-based fluids. By hydrogenation, carboxylic acid addition, or PVC blending, the nitrile polymer can meet a more specified range of physical or chemical requirements.
The quality of Nitrile-compounds depends on the percentage of acrylonitrile in the base polymer. The following table indicates the change of properties as a function of acrylonitrile content.
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| Compound number | Elastomer | Hardness IRHD ±5 | Description / Application | Certificates | Colour | Temp °C |
|---|---|---|---|---|---|---|
| NBR 366304 (60kB) |
Nitrile-NBR | 60 | Also as Vulc-O-ring | black | -30 / +120 | |
| NBR 36624 (60kB) |
Nitrile-NBR | 70 | Standard O-ring quality Low compression set | black | -30 / +120 | |
| NBR 36625 (85kB) |
Nitrile-NBR | 70 | Standard O-ring quality Low compression set | DVGW part 1 | black | -30 / +120 |
| NBR 36626 (60kB) |
NBR | 70 | General purpose quality | black | -30 / +120 | |
| NBR 366301 (60kB) |
Nitrile-NBR | 70 | Standard cord quality | black | -30 / +115 | |
| NBR 366470 (68kB) | Nitrile-NBR | 70 | Food-Pharma / extraction tested |
FDA 177.2600 |
black | -30 / +120 |
| NBR 32770 (113kB) |
Buna-N | 70 | Gas applications | NEN 7212 GasTec QA | black | -30 / +120 |
| NBR 366300 (103kB) | Buna-N | 70 | Gas applications | DVGW/EN549 | black | -20 / +80 |
| NBR 366005 (60kB) |
Nitrile-NBR | 70 | Automotive | VW 2.8.1-A70 | black | -30 / +120 |
| NBR 366006 (60kB) |
Nitrile-NBR | 70 | Automotive | VW 2.8.1-C70 | black | -30 / +120 |
| NBR 366008 on request |
Nitrile-NBR | 70 | Better mechanical properties | black | -40 / +120 | |
| NBR 366010 (68kB) |
Nitrile-NBR | 70 | Food-Pharma | FDA 177.2600 ADI |
grey | -30 / +120 |
| NBR 366001 (59kB) |
Nitrile-NBR | 70 | Ozon-resistant | black | -30 / +100 | |
| NBR Quad-ring on request |
Nitrile-NBR | 70 | Original Quad-ring | black | -20 / +120 | |
| NBR X-ring 366306 (64kB) | NBR | 70 | ERIKS low compression set | black | -30 / +120 | |
| NBR 366472 (68kB) |
Nitrile-NBR | 70 | Food-Pharma / Extraction tested | FDA 177.2600 | white | -30 / +120 |
| NBR 366185 (60kB) |
Nitrile-NBR | 75 | Also as Vulc-O-ring / Low compression set | black |
-20 / +120 |
|
| NBR 366302 (70kB) |
Nitrile-NBR | 75 | Food-Pharma / Low compression set /. Also as Vulc-O-ring | FDA 177.2600 3A, class II ADI |
black | -30 / +120 |
| NBR 44601 (59kB) |
Nitrile-NBR | 80 | General purpose quality | black | -30 / +120 | |
| NBR 366480 (68kB) |
Nitrile-NBR | 80 | Food-Pharma | FDA 177.2600 ADI |
black | -30 / +120 |
| NBR 47702 (59kB) |
Nitrile-NBR | 90 | Standard O-ring quality Low compression set | black | -30 / +120 | |
| NBR 366490 (68kB) |
Nitrile-NBR | 90 | Food-Pharma / Extraction tested | FDA 177.2600 ADI |
black | -30 / +120 |
| NBR 366303 (60kB) | Nitrile-NBR | 90 | Also as Vulc-O-ring | black | -20 / +120 | |
| NBR 366003 on request |
Nitrile-NBR | 90 | Ozon-resistant | black | -30 / +100 | |
| NBR specials on request |
Nitrile-NBR | 40 to 95 | Different applications | all colours |
| Product Name | MSDS Nº | Chemical Name | Date of issue |
|---|---|---|---|
| EPDM ERIKS compound 55914 (84kB) | E0002 | Ethylene-Proplene elastomer | 01/09/2005 |
| EPDM ERIKS compound 55914 PC (84kB) | E0003 | Ethylene-Proplene elastomer | 01/09/2005 |
| NBR ERIKS compound 47702 (86kB) | N0014 | Acrylonitrile-butadiene copolymer | 01/09/2005 |
| NBR ERIKS compound 36624 (86kB) | N0001 | Acrylonitrile-butadiene copolymer | 01/09/2005 |
| Silicone ERIKS compound 714177 (84kB) | S0008 | Silicone Rubber Compound | 01/09/2005 |
| Viton® compound 51414 black (84kB) | V0008 | Fluorinated Elastomer | 01/09/2005 |
| Viton® compound 51414 green (84kB) | V0009 | Fluorinated Elastomer | 01/09/2005 |
| Kalrez® - 4079 (21kB) |
KRZ013 |
Perfluoroelastomer |
14/05/2004 |
| Kalrez® - KRZ028 (23kB) |
KRZ028 |
Perfluoroelastomer |
14/05/2004 |
| Kalrez® - KRZ042 (34kB) | KRZ042 | Fluoroelastomer | 15/02/2007 |
| Compound Number |
Elastomer |
Colour |
Hardness IRHD ±5 | Description / Application |
Certificates | Temp. resistance °C |
|---|---|---|---|---|---|---|
| 366470 (442kB) | Nitrile-NBR | black | 70 | Food-Pharma / extraction tested | FDA 177.2600 ADI | -30/+120 |
| 366010 (442kB) | Nitrile-NBR | grey | 70 | Food-Pharma | FDA 177.2600 ADI | -30/+120 |
| 366302 (442kB) | Nitrile-NBR | black | 75 | Food-Pharma / Low compression set/ Also as Vulc-O-ring | FDA 177.2600 3A, class II ADI | -30/+120 |
| 366472 (442kB) | Nitrile-NBR | white | 75 | Food-Pharma / Extraction tested | FDA 177.2600 | -30/+120 |
| 366480 (442kB) | Nitrile-NBR | black | 80 | Food-Pharma | FDA 177.2600 ADI | -30/+120 |
| 366490 (442kB) | Nitrile-NBR | black | 90 | Food-Pharma / Extraction tested | FDA 177.2600 ADI | -30/+120 |
| Compound Number |
Elastomer |
Colour |
Hardness IRHD ±5 | Description / Application |
Certificates | Temp. resistance °C |
|---|---|---|---|---|---|---|
| 366470 (152kB) |
NBR |
black |
70 |
Food-Pharma / extraction tested |
FDA 21 CFR ADI |
-30 / +120 |
| 366472 (107kB) |
NBR |
white |
70 |
Food-Pharma / extraction tested | FDA 177.2600 |
-30 / +120 |
| 366480 (455kB) |
NBR |
black |
80 |
Food-Pharma |
FDA 177.2600 ADI |
-30 / +120 |
| 366490 (510kB) |
NBR |
black |
90 |
Food-Pharma / Extraction tested |
FDA 177.2600 ADI |
-30 / +120 |