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Precision Polymer N73B
| Category: | NBR , Acrylonitrile Butadiene Rubber |
| Manufacturer: | Precision Polymer Engineering Ltd. |
| Trademark: | Precision Polymer |
| Fillers: | - |
| Ports: | Qinzhou, Shekou, Shanghai, Ningbo |
| Delivery Terms | FOB, CIF, DAP, DAT, DDP |
| PDF: | t79eGG_Precision-Polymer-N73B.pdf  |
| PRICE: | Order Products email sales@su-jiao.com |
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N73B is a Copolymer of acrylonitrile and butadiene with a medium ACN content of 30 - 45%. NBR materials typically provide excellent resistance to petroleum-based oils, fuels and greases, as well as, very low gas permeability, ozone resistance, plus exceptional heat ageing and mechanical properties. N73B is accepted by the UK Ministry of Defence (MOD) to Defence Standard 02-337 part 1, issue 1 (NES 337) for use on naval ships and submarines. Material code MN70. Available in any sized O-ring (fully moulded up to 2.5m/8ft internal diameter) and custom designed components. Key Attributes
Typical Applications
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| General Information | |
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| Features |
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| Uses |
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| Appearance |
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| Hardness | Nominal Value | Test Method | |
|---|---|---|---|
| IRHD Hardness | 71 | ASTM D1415, ISO 48 |
| Elastomers | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Tensile Strength (Yield) | 17.2 | MPa | ASTM D412, ISO 37 |
| Tensile Elongation (Break) | 350 | % | ASTM D412, ISO 37 |
| Compression Set (70°C, 24 hr) | 6.0 | % | ASTM D395, ISO 815 |
| Aging | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Change in Tensile Strength in Air (100°C, 168 hr) | 7.0 | % | ASTM D412, ISO 37 |
| Change in Ultimate Elongation in Air (100°C, 168 hr) | -27 | % | ASTM D412, ISO 37 |
| Change in IRHD Hardness in Air (100°C, 168 hr) | 3.0 | ASTM D573, ISO 188 |
| Thermal | Nominal Value | Unit | |
|---|---|---|---|
| Maximum Operating Temperature | 120 | °C |
| Additional Information | Nominal Value | Unit | |
|---|---|---|---|
| Low Temperature Resistance - Non-brittle after 3 minutes | -25 | °C | |
| Minimum Operating Temperature: -35°C (-31°F) |
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