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Freudenberg Simrit N442 Nitrile Elastomer (NBR)
| Category | Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE) |
| Manufacturer | Freudenberg Simrit |
| Trade Name | |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Freudenberg Simrit N442 Nitrile Elastomer (NBR).pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
General Purpose; Internal Lubricant. Inferior resistance to ozone, sunlight and natural aging; poor resistance to oxygenated solvents. All testing done on AS568-214 size o-rings
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 1.24 g/cc | 1.24 g/cc | Original Properties; ASTM D297 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Shore A | 74 | 74 | Original Properties; ASTM D2240 |
| 74 @Temperature 70.0 °C |
74 @Temperature 158 °F |
Chloramine Solution Immersion 50 ppm Chloramine, 2 weeks; ASTM D2240 | |
| 74 @Temperature 70.0 °C |
74 @Temperature 158 °F |
Chloramine Solution Immersion 50 ppm Chloramine, 4 weeks; ASTM D2240 | |
| 75 @Temperature 70.0 °C |
75 @Temperature 158 °F |
Chloramine Solution Immersion 50 ppm Chloramine, 8 weeks; ASTM D2240 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Bend around 1/8th Inch Mandrel | no cracking | |
| Volume Change (%), ASTM D471 | 2 | Chloramine Solution Immersion 50 ppm Chloramine, 2 weeks at 70°C |
| 2.6 | Chloramine Solution Immersion 50 ppm Chloramine, 4 weeks at 70°C | |
| 3.8 | Chloramine Solution Immersion 50 ppm Chloramine, 8 weeks at 70°C |
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