| 20110121518 | SILICON CARBIDE MECHANICAL SEAL - A SIC mechanical seal including a main body made of SIC materials. The main body includes a fixing portion and a pushed surface. The seal also includes a retainer including a shaft coupling seat, a push ring and an elastic part; of which the push ring is made of SIC material, and provided with a ring surface that's riveted to the pushed surface of the main body. The seal also includes at least an area of lower friction, set globally or locally onto either the pushed surface of the main body or the ring surface of the push ring. The friction of this area is less than that of the main body and the push ring. The area of lower friction is of a composite layer which is made of a mixture of SIC and carbon materials, or composed of multiple dents arranged at interval. | 05-26-2011 |
