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汽车发动机的转速都比较高,负荷也比较大,对机油的循环量要求也大,相对的机油压力也比较高。因此对发动机上使用的油封的结构和形式的要求也比较高。如CA1091型汽车发动机,油封必须采用硅橡胶或聚氨脂橡胶,并且在唇口上设计了多条螺纹棱。但是现在有些油封生产厂,生产一种铁壳牛皮油封。这种油封只能适应密封润滑脂,而且转速在500rpm之内。如果用在高速运转、大负荷,机油的循环量大,
Car engine speed is relatively high, the load is relatively large, the oil circulation requirements are large, the relative pressure of the oil is relatively high. Therefore, the engine oil seal on the structure and form of the request is relatively high. Such as the CA1091 car engine, oil seal must use silicone rubber or urethane rubber, and lip in the design of a plurality of thread edges. But now some oil seal production plant, producing a steel shell leather seal. This seal can only adapt to sealed grease, and speed within 500rpm. If used in high-speed operation, heavy load, large amount of oil circulation,