Omar Khalid
Washers are little, round, flat discs with a hole in the middle, usually made of metal or plastic. They are used to distribute force over a large surface area and are placed between a surface and a screw to act as a spacer and prevent corrosion. Plastic washers are used for a variety of applications, including providing a watertight seal, minimizing vibrations, and distributing the load or force of a bolt or screw. They are also used in electrical and mechanical applications where insulation and resistance to melting, corrosion, and chemicals are required. While plastic washers are not called something else, there are different types of plastic washers, such as nylon washers, PVC washers, and polyamide washers.
| Characteristics | Values |
|---|---|
| Shapes | Flat, curved, crescent, dome, finger, wave, conical, thrust, retaining, countersunk, finishing |
| Materials | Steel, carbon steel, spring steel, stainless steel, copper, brass, aluminium, iron, bronze, zinc, titanium, ceramics, rubber, plastic, nylon, fibres, leather, polyethylene, PTFE (Teflon), polycarbonate, polypropylene, PVC, polyvinyl chloride, polyamide, polyether ether ketone, silicon bronze, Inconel, Monel, Hastelloy, bimetals, mica, phenolics, urethane |
| Use cases | Distributing load, vibration absorption, preventing corrosion, electrical insulation, providing a watertight seal, torque, spacing, preventing leaks, protection from damage, preventing galvanic corrosion, preventing loss of pre-load due to brinelling, bearings, preventing scratches and dents, preventing drips |
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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 of metal or plastic, with the latter being ideal for minor uses. Plastic washers are also used in applications where the fastener must be waterproof. They are often used to create a watertight seal in pipes and connections.
Plastic washers are also known as insulating shoulder washers and are commonly made from nylon, PEEK (polyether ether ketone), and other insulating materials. They are frequently used in the electrical sector to isolate mounting screws from electrical currents.
In addition to their waterproofing properties, plastic washers offer several other advantages. Unlike metal washers, they do not generate sparks, creating a more secure and reliable working environment. They are also lightweight, tough, have low moisture absorption, and are heat-resistant.
Plastic washers can be customized to meet specific requirements, with various thicknesses, hardnesses, and colours available. They are a safe and reliable option for creating watertight seals in a range of applications.
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They are used to reduce noise and shock
Washers are typically made of metal or plastic, with plastic washers being ideal for minor uses. They are little, round, flat discs with a hole in the middle and are used to facilitate the distribution of load over a relatively large area. Washers are placed between a surface and a screw to act as a spacer, minimising the effect of vibration produced by equipment or machines and preventing corrosion.
Plastic washers are often used in conjunction with bolts or screws to isolate the vibrating components of a system from the rest of the structure. This helps to reduce the transmission of vibration and noise through the system, improving its overall performance and reducing the risk of damage to the components.
In the electrical sector, insulating shoulder washers made of plastic help isolate mounting screws from electrical currents. In the automotive sector, washers are used to slam shut oil and gas connectors and stop leaks.
Plastic washers are also used as floor protectors under washing machines and dryers to prevent them from wobbling and reduce the noise caused by unstable machines.
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Plastic washers are used to prevent corrosion
Washers are typically used to distribute pressure evenly across a joint or as a spacer between two metal objects. They are available in various materials, including metal and plastic. Metal washers are generally used when high strength is required, while plastic washers are perfect for smaller applications, such as electronics, which require vibration resistance and electrical isolation.
Plastic washers are often used to prevent corrosion, especially in applications where corrosion resistance is a priority. They offer excellent resistance to chemicals and corrosion, making them ideal for use in electrical insulation. For example, insulating shoulder washers made from plastic are commonly used in the electrical sector to isolate mounting screws from electrical currents.
In addition to plastic washers, other anti-corrosion coatings can be applied to metal washers to enhance their corrosion resistance. Common coatings include zinc, galvanization, epoxy, powder coating, and Teflon. Zinc, a popular choice due to its low cost, provides a thin, uniform coating that protects against corrosion. Epoxy coatings offer greater protection against corrosion and can be applied in various colours, making them ideal for cosmetic applications. Powder coating, on the other hand, provides a durable and long-lasting finish that is scratch, impact, and chemical-resistant.
The choice between plastic washers and coated metal washers depends on the specific application, environment, and corrosion prevention needs. Plastic washers are often chosen for their lightweight, tough, and corrosion-resistant properties, especially in electrical applications. Coated metal washers, on the other hand, may be preferred when higher strength or flexibility is required, along with corrosion protection.
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They are used to reduce heat and friction
Washers are little, round, flat discs with a hole in the middle. They are made from a variety of materials, including metal and plastic. Plastic washers are a reliable alternative to metal washers and are used in a variety of applications. They are particularly useful in reducing heat and friction, as well as minimizing vibrations.
Plastic washers are commonly used in the recycling process to clean and decontaminate plastic materials. The friction washer uses mechanical friction and water to scrub off contaminants such as dirt, oils, adhesives, and labels from plastic surfaces. The high-speed rotation of the washer's drum or paddles creates friction, generating heat that helps break down and remove impurities. This combination of heat, friction, and water makes the process highly effective in cleaning plastic waste.
The use of plastic washers ensures that plastic waste is thoroughly cleaned before further processing. They improve the overall efficiency of the recycling process by producing cleaner, higher-quality recycled materials. Plastic washers are also more cost-effective and environmentally friendly than chemical methods of cleaning plastics.
In addition to recycling, plastic washers are used in electrical and chemical applications due to their excellent absorption and insulation properties. Nylon washers, for example, offer flexibility, abrasion resistance, and chemical resistance. Teflon™ washers, also known as PTFE, are known for their low coefficient of friction and resistance to water and oil, making them ideal for HVAC, automotive, and plumbing applications.
Overall, plastic washers are a versatile and low-cost alternative to metal washers, offering unique benefits such as reduced heat and friction, improved safety, and flexibility in various applications.
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Plastic washers are used to provide insulation
Washers are typically made of metal or plastic. They are small, round, flat discs with a hole in the middle. Plastic washers are used to provide insulation in various applications. Insulation washers are designed to separate the insulation material from the surface it is being installed on. This separation helps prevent thermal bridging, which occurs when a conductive material bypasses the insulation, compromising its effectiveness.
Plastic washers are ideal for minor uses and offer a lightweight and non-corrosive option for insulation systems. They are often made from high-density polyethylene (HDPE) or other durable plastics. Plastic washers are also used to electrically insulate steel screws from aluminium surfaces, preventing galvanic corrosion.
In the electrical sector, insulating shoulder washers made from plastic help isolate mounting screws from electrical currents. Plastic washers are also used in rotating applications as bearings. They can also act as spacers, minimising the effect of vibration produced by equipment or machines.
Plastic washers can be used in conjunction with insulation clips and discs to securely and efficiently fix insulation materials to various surfaces. These washers are small, disk-shaped components that improve energy efficiency and enhance the overall performance of insulation installations.
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Frequently asked questions
Washers are little, round, flat discs with a hole in the middle. They are made from different materials, including metal, plastic, rubber, and ceramic. They are used to distribute force over a large surface area and to prevent corrosion.
Plastic washers are used for a variety of applications, such as providing a watertight seal, minimizing vibrations, and distributing the load or force of a bolt or screw. They are often used in electrical and mechanical applications where insulation and resistance to melting, corrosion, and chemicals are required.
Some specific types of plastic washers include nylon washers, polyvinyl chloride (PVC) washers, polyamide washers, and polyethylene washers.
There are many suppliers that offer plastic washers, such as Superior Washer & Gasket Corp. and Essentra Components US. You can also find them at hardware stores like Home Depot.
