O-Ring Materials - ACM
Polyacrylate or acrylate rubber is a copolymer with two main components: the backbone (monomeric acid esters of alkyl or alkoxy groups) and the reactive vulcanization sites.
Material properties:
● Resistant to mineral oils (transmission oil and steering fluid).
● It can resist oxidation and ozone at high temperatures, but its water resistance and low-temperature elasticity are worse than NBR.
Applicable industries:
● High-temperature resistant oil seals, crankshafts, valve stems, cylinder gaskets, and hydraulic oil pipes for automobiles.
Best● Better○ Good△ BadX
| Rubber type (ASTM Abbreviation ) | Polyacrylate Rubber ACM | ||
| Chemical structure | Acryl acrylate copolymer | ||
| Main feature | High temperature oil resistance, weather resistance, oxygen resistance, heat resistant water, low temperature. | ||
| Pure rubber properties | proportion Muni viscosity ML1+ (100℃) | 1.09 ∼ 1.10 45 ∼ 60 | |
| 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 | 50 ∼ 70 -20 ∼ 130 -35 ∼ 150 70 ∼ 120 600 ∼ 100 △ △ ○ ○ | |
| 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 X X ● X ● | |
| Fuel oil | Light oil、kerosene Heavy oil Gasoline | X X X | |
| Water | Water、Warm water Water vapor、Hot water Antifreeze water Water cutting oil | X X X X | |
| Drug | Hydrochloric acid 20% | △ △ X X X X X △ X X X X X | |
| Gas | LPG Urban gas Ozone Freon 12 Freon 22 | △ ○ ● X △ | |
| Other | Food Sanitation Law | ● ● | |
| The main purpose | For transmissions and power systems such as automotive gearboxes and crankshafts. | ||