Rubber Molding/

Rubber Washers

Rubber washers are thin disks with holes through their middle sections. Washers are among the most widely used hardware accessories; they are most commonly used to distribute the load of a fastener, though other less common uses have created a market for an extensive variety of washers of all constructions and configurations. Rubber washers, for example, are used to keep taps watertight, hoses from leaking and vibration from being passed between pieces of machinery during industrial processes.

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Premier Seals Manufacturing
Akron, OH
877-771-6766
Don`t hesitate to contact Premier Seals Manufacturing for all your non-metallic, molded rubber gasket and sealing needs, including rubber washers. From simple to large components and complex, high-precision parts designed to your needs, we have years of compression and injection molding experience to offer the most cost effective, reliable solutions in a wide variety of materials.
 
Accurate Products, Inc.
Chicago, IL
800-782-7776
Accurate Products is capable of producing custom rubber products in a variety of materials. Our product line includes bumpers, suction cups, mounts, grommets, seals, rubber washers and more. If our extensive line of rubber molded parts does not meet your needs, we will be happy to produce your custom job. If you are ready for quality and low-pricing, call Accurate.
 
Ebco® Inc.
Elgin, IL
847-531-9500
Focused on superior customer service, Ebco remains a leading manufacturer when it comes to high-quality, low-cost molding. We mold many types of rubber and various products and parts, including rubber washers. We can supply clients with both rubber and plastic parts. We have been ISO 9001:2000 certified since 2000. We provide quality customer service and help them reach their goals.
 
Da/Pro Rubber, Inc.
Broken Arrow, OK
918-258-9386
Since 1960, Da/Pro Rubber has been providing rubber washers along with the most complete custom molding services in order to meet your challenging specifications. The company is skilled in using a wide variety of materials, offering solutions to medical, electronics, industrial and aerospace markets. They carry many parts, and anything they don't have they will help you create.
 
Britech Industries
Stuart, FL
772-286-9278
If you have a need for custom products, such as rubber washers, with a fast turnaround, Britech Industries is the company you need to call. We do molded, extruded and die cut rubber - of various products and in the colors and compounds you need. We can manufacture domestically or off shore. If you do not see what you need for your application, let us know, so we can find a solution for you!
 
Reliant Rubber Company
Wake Forest, NC
800-875-7376
Reliant Rubber offers fast, reliable, high quality molding, extruding, die and lathe cutting. We create custom parts, such as rubber washers and stock a wide array of industrial rubber products. We work with all non-metallic materials and meet ANY size and configuration, the smallest gasket and washer to the largest molded rubber part - one to a million delivered on-time.
 
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Industry Information

Rubber Washers

Rubber washers can be manufactured to any size and thickness and they can be made of nearly any rubber material, depending on the application. Some of the most common compounds include silicone, fluorosilicone, viton (fluoro-elastomer), neoprene, nitrile (Buna-N), hypalon, EPDM, SBR (red rubber), FDA white nitrile, polyurethane and natural rubber. Rubber washers come in varying degrees of hardness which are indicated by numbers between 30 (softest) and 90 (hardest). The thicknesses of rubber washers usually range between 0.031" to 0.375". The size of rubber washers is determined by measuring outside diameter (the outer-most edge) and inside diameter (the center hole). Outside diameters range from around 0.125" to 2.984" and inside diameters range from approximately .094" to 2.859".

Rubber washers can be fabricated by compression or injection molding depending on the intended application. Injection molding is the process by which molten plastic is injected into an appropriately shaped mold cavity. The process begins with a collection of raw rubber material that is heated to a liquid state. Once molten, the rubber is injected into a cavity that, in the case of rubber washer fabrication, is shaped like the outline of a washer. The rubber fills the cavity and takes its shape. It is then allowed to cool and harden, at which point it has become a finished rubber washer. The washer can then be prepared for shipment to customers or sent for additional processing if necessary. Compression molding is similar to injection molding; the difference is that while the plastic is in the mold cavity, pressure is applied to the plastic to ensure contact with all of the contours of the mold. Both injection and compression molding are widely used, though injection molding is generally considered to produce more uniform products.

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