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rubber o rings, o rings, EPDM o rings, NBR o rings, color o rings, encapsulated o ring, PTFE encapsulated o ring
General Introduction of O Ring
An O-ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.
The O-ring may be used in static applications or in dynamic applications where there is relative motion between the parts and the O-ring. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons.
O-rings are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable and have simple mounting requirements. They can seal tens of megapascals (thousands of psi) of pressure.
Main Rubber Compounds and Properties
| NBR | MVQ | FKM() | EPDM | HNBR | |
| Material color | black or color | black or color | black or color | black or color | black or color |
| Hardness (Shore A) | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 |
| Opreating Temperature | -40~125 | -60~225 | -40~250 | -40~125 | -40~140 |
| Tensile Strength(Mpa) | 14 | 7.5 | 12 | 13 | 14.8 |
| Elogation At Break (%) | 385 | 220 | 210 | 300 | 425 |
| Specific Gravity | 1.2 | 1.35 | 1.85 | 1.15 | 1.2 |
| Properties | excellent in oil resistant, wear resistant | excellent in heat resistant, cold resistant,weatherability | excellent in heat resistant, oil resistant, chemical resistant | outstanding heat, ozone, and weather resistance. | excellent in oil resistant, heat resistant,weatherability |
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