O-Ring Materials-NBR
With butadiene, acrylic gel copolymer chemical structure. Nitrile rubber O rings features are oil resistant, water resistant, abrasion resistant, high oil pressure resistant, non-polar solvent resistant.
Operating temperature: –30 to +250 °F
Best● Better○ Good△ BadX
| Rubber type (ASTM Abbreviation ) |
Nitrile Rubber NBR |
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| Chemical structure | Butadiene、Acrylic gel copolymer | ||
| Main feature | Oil resistant, water resistant, abrasion resistant, high oil pressure resistant, non-polar solvent resistant. | ||
| Pure rubber properties | proportion Muni viscosity ML1+ (100℃) |
1.00 ∼ 1.20 30 ∼ 100 |
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| Physical properties of synthetic rubber | Possible JIS hardness range General temperature range(℃) Special temperature range(℃) Tensile strength (kg/cm2) Elongation (%) Anti-elastic Cracking Wear resistance Bending resistance |
40 ∼ 90 -30 ∼ 100 -50 ∼ 120 50 ∼ 250 800 ∼ 100 ○ ○ ● ○ |
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| Various properties of synthetic rubber | lubricating oil | Engine oil Gear Oil Motor oil Shaft lubricant Refrigeration oil Butter Lithium oil Oyster sauce |
● ● ● ● ○ ● ● ● |
| Working oil | Pot shaft oil Oil + Water emulsion system Water + Glycol Phosphate ester Si Brake Fluid Gear oil |
● ● ○ X ● △ △ |
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| Fuel oil | Light oil、kerosene Heavy oil Gasoline |
△ △ △ |
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| Water | Water、Warm water Water vapor、Hot water Antifreeze water Water cutting oil |
○ ○ ○ ○ |
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| Drug |
Hydrochloric acid 20% |
△ ○ X ● X X ○ ● X ● X ∼△ X X ∼△ |
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| Gas | LPG Urban gas Ozone Freon 12 Freon 22 |
○ ○ △ ○ △ |
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| Other |
Food Sanitation Law |
○ ● |
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| The main purpose | Fuel tank、Hydraulic oil、Oyster sauce、Grease、Water...Seals。 | ||