What is a sealing washer and what is it used for?

‌Sealing Washer‌ is a gasket used to fill the gap between two or more parts to prevent fluid or gas leakage. It is widely used in various automotive, mechanical, aviation and other fields. Its main function is to ensure sealing, prevent fluid or gas leakage, and withstand pressure and vibration.

Types of Sealing Washers

Hydraulic Sealing Washers: used in hydraulic systems, with an L-shaped cross section, and the internal filler is squeezed when pressurized to achieve the purpose of sealing. Hydraulic Sealing Washers are highly standardized, with standards for size, material and shape.

‌Pneumatic Sealing Washers: used in gas systems, with a V-shaped, U-shaped or sloped cross section, and the internal air is squeezed. It is usually used in conjunction with metal gaskets that are easy to deform elastically to adjust the air density.

‌Mechanical Sealing Washers: use the rotation or vibration of the machine parts to generate friction, and fit the two machine parts tightly through wear. It usually consists of a sealing ring, a spring, an end face gasket and a sealing seat.

Purpose of Sealing Washers

The main purpose of Sealing Washers is to prevent the leakage of fluids or gases. In various industrial applications, gaskets ensure the normal operation and safety of the system. For example, in hydraulic systems, hydraulic gaskets achieve sealing by squeezing the filler; in gas systems, pneumatic gaskets prevent gas leakage by squeezing air; in mechanical systems, mechanical gaskets ensure a tight fit through friction and wear.

Installation method

When installing gaskets, pay attention to the following steps:

Select the appropriate gasket.

Clean the connection.

Place the gasket flat on the connection.

Fold one end of the gasket with your fingers and suck the other end over to ensure that the gasket is completely covered on the connection.

Tighten the nuts or bolts.