Rubber Washer Reference Site

The Many Functions Of Thick Rubber Washers

Thick rubber washers are small cushioning and spacing devices that are used in many industrial settings. With an extended thickness, they provide added damping, shock absorption, and support.

Thick rubber washers feature an interior diameter that fits around the neck of a screw, bolt, or other threaded fasteners. Like most flat washers, they raise the profile of an assembly. 

They will serve as a buffer that isolates fasteners from the installation surface. This capacity is especially important with materials that have potential reactions or incompatibility, including those that may be subject to galvanic corrosion when paired. By creating a barrier, rubber washers can prevent this issue along with regular wear and abrasion of installation surfaces.

Because thick rubber washers provide an extended height of a compressible material, they deliver special capacity for absorbing force and damping tremor. In some applications, thick rubber washers are used as vibration isolators. They will also naturally insulate electricity and are useful in many electronic applications.

They are also sometimes used as stabling or non-slip devices on the bottom of appliances. Extra thick rubber washers provide a sturdy grip on other materials. This feature, combined with their shock-absorbing capabilities, makes them useful on smaller structures, like furniture and storage equipment, as well as electronic and mechanical appliances. 

Thicker rubber washers can provide support and rigidity when compared to rubber washers with a standard thickness. Their added height means that they are firmer. 

If added stability is needed, some rubber washers will be paired with metal washers. This can enhance their rigidity and also allows for more controlled positioning of fasteners. For example, a thick rubber washer with a steel washer in its center allows the fastener head or nut to be placed in the center of the washer and contributes to a more even profile. This is beneficial when a fastener assembly needs to be flushed or recessed once installed.      

Thick rubber washers may be used as a stopper or cork in some applications. Washers used in this capacity may have a tapered outer diameter that enables them to be inserted into an opening and become tightened in place. Since rubber is a reliable sealing material, it will prevent leaks and help control the flow of liquid.

When seeking thick rubber washers for purchase, they can be sourced from most hardware retailers in standard sizes and in quantities that accommodate smaller projects. If thick rubber washers are needed in large quantities or in specialty sizes and thicknesses, they are best sourced from a stamping manufacturer.

In some cases, thick rubber washers made from synthetic, polymer-based rubber alternatives, including neoprene, silicone, and Santoprene, may be a better option than thick washers made from natural rubber. This is due in part to improved durability, particularly in settings that are subject to temperature extremes, moisture fluctuations, and other operational circumstances.

What Are Thick Rubber Washers Used For?

Thick rubber washers are used for many different functions. They can provide added support and raise the height of faster assemblies as a non-metal spacer. Because they are effective for damping tremor and absorbing shock, they are used as vibration isolators on mechanical and electronic equipment. As rubber has a higher coefficient of friction and provides a grip on many surfaces, thick rubber washers are frequently used as non-slip feet on equipment housing and furnishings. Thick washers can also be used as stoppers or corking devices on various containers. 

What Temperature Can Rubber Washers Withstand?

The temperature range and melting point of rubber washers will vary based on the solids that comprise the rubber. Natural rubber will begin to melt at 356 degrees F (180 degrees C). Santoprene rubber washers will melt at temperatures ranging from 350 to 450 degrees F (175 to 230 degrees C). Silicone rubber washers do not have a melting point, even at extreme temperatures, but they will start to lose stability and will deteriorate when temperatures exceed 840 degrees F (450 degrees C).