Rubber Washer: What is it?

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Rubber washers are used to increase tension and create a tight seal in wet areas. They are more flexible than metal washers and can prevent fluid or air leaks. However, they should not be used with corrosive liquids or in extreme temperatures.

A washer is a flat, round piece of hardware with a hole in the center that is often placed between a screw or nut and a surface to increase tension. A rubber washer is a piece of hardware that has been manufactured from rubber. Most often, a rubber washer is used in applications that require a tight seal; those that require a certain degree of sagging in the washing machine; and those that are exposed to water, moisture, or other liquids.

The hole in a rubber washer allows a screw or bolt to pass through the center of the material. In some cases, a larger item, such as a pipe or threaded conduit, may be passed through the center instead. The overall diameter of the washer should be larger than the head of the screw or other piece of hardware being driven through it, and the hole in the center should be smaller than any nuts or other fasteners used to secure it. This helps ensure that the washing machine is held in place.

Wet areas commonly require the use of rubber washers. Washers are often made from metal, which can rust when exposed to moisture. Rubber washers are both durable and fluid resistant. This makes them ideal for use in plumbing and in systems that may experience condensation, such as in a heating, ventilation and air conditioning (HVAC) system. They are also common on boats, swimming pools, pressure washers and other water-related equipment.

Another benefit of rubber washers is that they are more flexible than metal washers. This allows the fasteners to fit more securely and also allows for the slight expansion and contraction needed in some applications. Foam washers can be used to meet these needs, but they can deteriorate over time. A rubber washer, being stronger and less prone to damage, will last longer, particularly if the fasteners around the washer are tightened and loosened frequently.

A rubber washer also has the potential to create a seal. In this case, the washer can be used to prevent fluid or air leaks. This is due to both the flexible nature of the rubber and its water resistant quality.

Not all applications are ideal for rubber washers. For example, they should not be used with corrosive liquids and can interact negatively with other types of liquids. They also should not be placed in extreme temperatures, as melting can occur. Also, rubber washers exposed to temperature differences, especially in combination with humidity changes, need to be replaced occasionally.




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