What Are The Two Types Of Oil Seal?

Number of hits：4032023-09-28 10:42:16　

　　Oil seals also known as shaft seals, are integral components in various types of machinery. They are primarily used to seal the openings between stationary and moving components in mechanical equipment. The most commonly used oil seals in most applications are rubber cased or metal cased oil seals.

　　Rubber cased oil seals are widely used in applications where there is a risk of metal cased oil seals failing, such as due to thermal expansion. Rubber cased oil seals cannot rust, providing a stark contrast to metal cased oil seals. Furthermore, they can better seal slightly damaged housings because rubber can provide a more stable seal at high temperatures.

　　On the other hand, metal cased oil seals are designed to replace traditional elastomeric oil seals when the temperature, system pressure, or rotational speed exceeds the capabilities of rubber oil seals. Metal cased oil seals are designed to meet your specific rotary seal design requirements. Moreover, metal cased oil seals are used when installed into housing bores made from the same material. This allows for equal contraction and expansion of the material during operation, preventing leakage from occurring.

　　Both types of oil seals play crucial roles in various applications. Rubber cased oil seals are often used in automotive engines, hydraulic cylinders, fuel systems, and more. Metal cased oil seals find their use in rotating equipment like pumps, motors, and gearboxes.

　　Understanding the differences between rubber cased and metal cased oil seals is essential when selecting the right seal for your application. While both types serve the same general purpose of preventing leakage and contamination, their specific applications vary based on the nature of the machinery they are used in.