Chloe Zhang
Washers are typically made from metal or plastic. Metal washers are used when high strength is required, while plastic washers are ideal for minor uses. Plastic washers are commonly used in electrical and mechanical applications where insulation and resistance to melting, corrosion, and chemicals are required. They are also used when non-metallic washers are needed to reduce noise and shock or to prevent leaks and damage to surfaces. The specific type of plastic washer depends on the application's requirements, such as strength, insulation, corrosion resistance, heat or chemical resistance, or aesthetics. Some common types of plastic washers include nylon washers, PVC washers, and polyamide washers.
| Characteristics | Values |
|---|---|
| Materials | Plastic, rubber, urethane, nylon, peek, ceramic, phenolics, polyethylene, PTFE (Teflon), fibres, leather, bimetals, mica, polypropylene, polyvinyl chloride, polycarbonate, polyether ether ketone, polyamide, and more |
| Uses | To facilitate the distribution of load over a large area, act as spacers, absorb vibrations, provide insulation, prevent corrosion, leaks, spills, scratches, dents, and other damage, and more |
| Types | Plain washers, spring washers, lock washers, thrust washers, curved spring washers, crescent washers, dome spring washers, finger spring washers, wave spring washers, split lock washers, retaining washers, and more |
| Colors | Natural, black, clear, and light brown |
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What You'll Learn
Plastic washers are used to provide a watertight seal
Washers are small, round, flat discs with a hole in the middle. They are typically made from metal or plastic, with the latter being ideal for minor uses. Plastic washers are also used in the electrical sector as insulating shoulder washers, helping to isolate mounting screws from electrical currents.
Plastic washers are also used to dampen vibrations. They absorb shocks and vibrations, preventing damage to objects that are fastened together. This is especially important when one of the two objects connected by a threaded fastener vibrates violently. The soft material of plastic washers makes them better at absorbing vibrations than harder materials like metal.
Plastic washers are available in various thicknesses, hardnesses, and colours. They are also mildew-resistant, making them suitable for fluid or outdoor applications. When selecting a washer material, it is essential to consider the specific requirements and choose the most appropriate type for the application.
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They are also used to reduce noise and shock
Washers are little, round, flat discs with a hole in the middle. They are typically made from metal or plastic, but can also be made from rubber, ceramics, or nylon. Washers are used to facilitate the distribution of load over a large area, and can act as spacers, minimising the effect of vibration produced by equipment or machinery.
Plastic washers are ideal for minor uses. They are also used to reduce noise and shock, particularly in appliances such as washing machines. Plastic washers can be used to prevent a washing machine from wobbling and jiggling during a spin cycle, reducing the noise caused by unstable washing machines or dryers. They can also be used to prevent damage to the floor by reducing the impact of the machine's vibrations.
In addition to their use in washing machines, plastic washers are also used in construction projects, such as when attaching structural steel or concrete elements, to reduce vibration and noise. They can also be used in automotive applications, such as in the suspension, engine, and transmission, to reduce vibration and noise.
Plastic washers can also be used in electrical applications, where they are known as insulating shoulder washers. These washers help to isolate mounting screws from electrical currents, providing electrical insulation.
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Plastic washers are ideal for minor uses
Washers are little, round, flat discs with a hole in the middle. They are typically made from metal or plastic, but can also be made from other materials such as rubber, ceramic, or phenolics. The type of material used for a washer depends on its intended application.
The versatility of plastic washers extends to their ability to withstand harsh corrosive substances, acids, and alkalis. This makes them ideal for sealing bulkhead fittings to fuel cells. Additionally, plastic washers are excellent electrical and thermal insulators, making them suitable for use in high-load electrical applications such as switch housing.
The specific type of plastic used for washers can vary, with options including nylon, Teflon (PTFE), polyethylene (PE), Delrin, and Nylatron. Each material offers unique advantages, such as flexibility, abrasion resistance, chemical resistance, and machinability. For example, LDPE washers are flexible and ideal for water-resistant applications, while HDPE washers are stronger and better suited for mechanical and industrial uses.
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They are used to prevent galvanic corrosion
Washers are little, round, flat discs with a hole in the middle. They are usually made of metal or plastic, but can also be made from other materials such as rubber, ceramics, or nylon. Plastic washers are ideal for minor uses.
Plastic washers are used to prevent galvanic corrosion. This type of corrosion occurs when two dissimilar materials are combined in a corrosive electrolyte. For example, when two dissimilar metals or two similar metals with slightly different chemical compositions are in contact in the presence of moisture, a minute current may be generated, causing one of the metals to corrode.
To prevent galvanic corrosion, it is recommended to select metals that are close together in the galvanic series and to avoid dissimilar metal combinations, especially under unfavorable temperature conditions. In addition, materials can be insulated with anti-corrosion tapes or separated by plastic or rubber washers to reduce corrosion time. Plastic washers act as a barrier between the two dissimilar materials, interrupting the galvanic circuit and preventing corrosion.
Plastic washers are often used to insulate steel screws from aluminium surfaces. They can also be used in conjunction with metallic washers to improve their insulating properties. For example, a polymeric washer with a metallic insert can be used, where the insert takes the preload while the polymer insulates.
Overall, plastic washers are an effective way to prevent galvanic corrosion by providing insulation between dissimilar materials.
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Plastic washers are used to fill space between surfaces to prevent leaks
Washers are small, round, flat discs with a hole in the middle. They are typically made of metal or plastic. However, they can also be made from other materials, including brass, stainless steel, carbon steel, ceramics, phenolics, and fibres. The type of material used depends on the specific application requirements, such as load, environment, and compatibility.
Plastic washers are ideal for minor uses. They are typically produced via injection moulding and offer a cost-effective alternative to metal washers. They are made from materials such as thermoplastics and thermosetting polymers like polyethylene, PTFE (Teflon), and nylon. Nylon washers are lightweight, resistant to abrasion and chemicals, and have good electrical insulation properties.
Plastic washers are used to fill the space between surfaces to prevent leaks. They act as spacers, reducing the effect of vibration produced by equipment or machinery. They also help to prevent corrosion. In addition, plastic washers can be used to create a seal between two objects, which is important for preventing leaks.
Top hat washers, for example, are commonly used in plumbing applications to prevent leaks during pipe and faucet installations. They are made from insulating materials like nylon or plastic, which help to isolate electrical currents. This is essential in electronics and electrical installations.
In summary, plastic washers are a versatile and cost-effective option for minor applications. They are effective at filling spaces between surfaces, reducing vibrations, preventing corrosion, and creating seals to stop leaks.
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Frequently asked questions
Yes, plastic washers are also known as plain washers or flat washers.
Plastic washers are used for a variety of applications, such as providing a watertight seal, minimising vibrations, and distributing the load or force of a bolt or screw. They are also used to reduce heat and friction when tightening a fastener.
Some examples of plastic washers include nylon washers, PVC washers, and polyamide washers. Other examples are Polypropylene (PP) washers, Polyether Ether Ketone (PEEK) washers, and Polycarbonate (PC) washers.
