Rubber Washer Reference Site

Large Rubber Washers As Flexible Spacing Devices

Large rubber washers can refer to rubber washers with extended outer diameters, including those that resemble fender washers. Large rubber washers can also refer to washers with a narrow diameter ratio, which means the washer has a very thin surface area and the inner diameter is close to the measurement of the outer diameter. Washers that have this narrow diameter ratio are frequently used as gaskets and sealing washers.

Large rubber washers can bring many advantages to a fastener assembly. Like most flat washers, they are meant to be fitted around the neck of a screw, bolt, or similar type of threaded fastener. They may be positioned between the head of the fastener and the installation surface or between the nut and installation surface. In some cases, multiple rubber washers may be used within a single fastener assembly. 

In their most rudimentary function, washers will distribute load and serve as a buffer between fasteners and materials. They can also be used to incorporate spacing and added clearances between connections. As large rubber washers are more flexible than metal varieties, they are not typically used for rigid support applications. They are, however, better suited to provide added cushioning, damping, and sealing.

Rubber’s electrical insulation properties make these washers useful for various electrical equipment applications. Their ability to absorb shock and isolate force furthers their performance in mechanical and motorized systems.

Large rubber washers have a high frictional coefficient and will therefore grip a wide range of surfaces. This can help to prevent the turning of fasteners, which contributes to the security and reliability of an assembly. They can also be used as non-slip devices on the underside of equipment, parts, and furniture. 

Their flexible form and grip contribute to their usefulness as gaskets. When they are sized correctly for the opening of a spout, valve, or connections between pipes, they can contain the flow of liquids and gasses. Large rubber flat washers are frequently used in plumbing, HVAC, and processing equipment in a sealing capacity. However, in some applications, an o-ring, which has rounded edges instead of a flat surface, can be more suitable for use as a gasket.

Large rubber washers will typically feature a round inner and outer diameter, although it’s possible to have them made in other shapes. Large rubber washers can also be manufactured using a variety of rubber-based synthetics, including neoprene and silicone. They can also be made to varied thickness requirements.

If custom rubber washers or especially large quantities are required, sourcing them directly from a stamping manufacturer is usually the most efficient and economical option. Large rubber washers in standard sizes are also readily available from most hardware and fastener retailers. 

What Are Large Rubber Washers Used For?

Large rubber washers provide an extended spacing area between threaded fasteners and an installation surface. Through their material properties, they maintain assembly security, dampen vibration, incorporate flexible clearances, and add electrical insulation. Large rubber washers can also be used as sealing washers or in a gasket capacity, but they must be properly fitted around an opening or connection between pipes to be effective. Because of these and other capabilities, they are added to many structural and mechanical settings.  

How To Get Large Rubber Washers In Metric Sizes?

Many standard rubber washers sold in the United States meet with inch-based measurements, but it is still possible to get metric-sized, large rubber washers from fastener distributors that cater to domestic and international customers. Metric rubber washers can also be sourced from stamping manufacturers. 

Can Large Rubber Washers Be Used Like Gaskets?

Large rubber washers with a narrow inner and outer diameter ratio are sometimes used as gaskets or sealing washers. While the inner diameter will be wide enough to permit the flow of liquids and gasses, they will still have a flat surface that is similar to a hose washer. If a gasket must fit within a threaded groove or around a cylindrical fitting--such as a bottleneck, spout, or between pipe connections--an o-ring with rounded corners can be a better option.