Nylon coatings are used to protect metal components and improve how they perform over time. By providing a tough barrier that resists abrasion, moisture, and electrical conductivity, nylon offers a predictable solution for demanding operational environments.
These distinct mechanical and insulating properties make the coating a critical choice for a wide range of industries.
Advantages of Nylon Coatings
Nylon coatings create a continuous polymer layer over metal parts, helping protect the substrate from corrosion, wear and impact. Unlike a purely decorative coating, nylon is often chosen for the way it changes the performance of the part in service.
The coating can provide a tough, warm-to-touch and slightly flexible surface that resists abrasion and helps protect edges, contact points and handled areas. It can also act as an electrical insulating layer where metal components need separation or safer handling. Nylon has the added benefit of being a low friction coating which can be a benefit in certain applications.
Nylon is commonly specified where parts are exposed to moisture, mechanical movement, repeated handling or aggressive service conditions. For engineers and procurement teams, the key benefit is not simply coating the part, but improving how it performs over time.
How Nylon Coatings are Applied
Nylon coatings are applied to prepared metal components. Before coating, parts are cleaned and pre-treated so the nylon can bond properly to the surface; poor preparation can lead to weak adhesion, uneven coverage or premature coating failure.
Two common application methods are fluidised bed dip coating and electrostatic spray coating.
- Fluidised bed dip coating: The component is heated and dipped into a bed of nylon powder suspended in air. The powder melts onto the hot surface, forming a continuous coating around the part; this method is often used where a thicker, more encapsulating finish is required.
- Electrostatic spray coating: Nylon powder is given an electrical charge and sprayed onto the grounded component. The charged powder is attracted to the surface before being fused by heat, making the process suitable for controlled coverage on selected geometries.
The choice of process depends on the part size, shape, substrate, required coating thickness and final use. Masking, coating build-up and edge coverage must be controlled carefully, especially on threaded parts, recesses, mating surfaces and complex components where too much or too little coating could affect fit or function.
Aerospace & Defence Applications
Aerospace and defence applications demand dependable finishes, tight process control and long-term component performance. Parts may be exposed to vibration, handling damage, abrasion or changing environmental conditions, so the coating must be chosen with the application and specification in mind.
Common aerospace and defence uses
Nylon coatings can be used on selected components such as:
- Interior parts and cabin mechanisms
- Seat components and support structures
- Brackets and structural fittings
- Protective covers and housings
- Components exposed to vibration or repeated movement
- Specialist metal parts requiring protective coating
Common aerospace and defence uses
Abrasion resistance
Plastic Coatings lists abrasion resistance as a coating property for aerospace applications and gives aircraft interior components as a long-standing application area. Nylon is relevant where a hard-wearing finish is required on parts exposed to handling, movement or contact.
Low-friction performance
Low-friction coatings are listed by Plastic Coatings for aerospace applications, including wiring conduit interiors and bearing journals. Where nylon is the specified material, this property can help reduce surface drag and wear between contacting parts.
Non-conductive coating options
Plastic Coatings identifies non-conductive coatings as part of its aerospace coating property range and lists bus bars as an aerospace application. Nylon can be considered where an insulating thermoplastic coating is suitable for the component and specification.
Automotive Applications
Automotive components work in environments where corrosion, vibration, road salt, oils, fuels and repeated movement are all common considerations. Nylon coatings are used where metal parts need a durable finish that can continue to perform throughout the life of the vehicle.
Common automotive uses
Nylon coatings may be applied to components such as:
- Seat frames and adjustment mechanisms
- Springs, clips, brackets and fasteners
- Door mechanisms, runners, handles and levers
- Underbody components
- Wire guides and cable protection parts
- Selected battery or electrical components
Key benefits for automotive parts
Severe corrosion resistance
Plastic Coatings lists severe corrosion resistance as a common automotive finish requirement. This is relevant to components such as fuel filler pipes, under-bonnet parts and battery trays, where exposure to moisture, heat or road conditions can be part of the service environment.
Anti-squeak and noise reduction
Automotive finishes listed by Plastic Coatings include anti-squeak and noise reduction. Nylon’s low-friction surface makes it suitable for selected clips, seat components and moving assemblies where contact noise or rubbing needs to be reduced.
Wear and impact resistance
Plastic Coatings identifies wear resistance and impact resistance as automotive coating requirements. These properties are relevant to parts such as seat springs, brackets, seat belt loops and wiring clips, which can be exposed to movement, contact or repeated handling.
Petrochemical Applications
Petrochemical environments place high demands on fasteners and associated metal components. Exposure to moisture, chemicals, outdoor conditions and process environments means that coatings must be selected for durability, protection and consistency.
Common petrochemical uses
Nylon coatings may be applied to components such as:
- Fasteners, bolts and nuts
- Studs and threaded components
- Washers and spacers
- Pipe supports and clamps
- Backing rings, valves and handwheels
- Brackets and fixing assemblies
- Components used around plant, processing equipment or external structures
Key benefits for petrochemical fasteners
Fastener-specific coating performance
Plastic Coatings’ petrochemical fastener page focuses on PTFE and bonded lubricant coatings, rather than nylon as the default fastener coating. For this sector, nylon should only be specified where its properties are suitable for the fastener design and service conditions.
Corrosion and chemical resistance
Plastic Coatings identifies severe corrosion resistance and chemical resistance as requirements for energy-sector coatings, including thermoplastic coatings used on pipeline and pipe fitting components. Nylon may be relevant where a thermoplastic corrosion barrier is required and the environment is compatible with the material.
Colour identification
Plastic Coatings notes that coatings in petrochemical and energy applications can be supplied in colours to aid product identification. This benefit is useful for coated components that need clear visual differentiation by type, specification or application.
Electrical Applications
Nylon coatings are widely used in electrical applications where metal components require insulation, protection or safer handling. The coating forms a continuous barrier over suitable parts, helping to separate the metal substrate from its operating environment.
Common electrical uses
Applications may include:
- Electrical enclosures
- Cable guides and wire protection components
- Protective covers
- Handles
- Brackets and supports
- Busbars
- Selected conductive components requiring insulation
Key benefits for electrical components
Electrical resistance
Plastic Coatings states that Nylon 11 and Halar ECTFE have been used on bus bars to achieve electrical resistance up to 15kV. Where nylon is selected, this provides a clear basis for its use on components requiring insulation.
Protection for tools and contact points
Plastic Coatings lists tool handles and contact points as electrical applications where coatings are used for insulation in live or potentially live environments. Nylon is relevant where an insulating, durable grip or contact surface is required.
Durability in harsh environments
Plastic Coatings describes electrical coatings as supporting durability and anti-corrosion in harsh environments. Nylon can be selected where the component requires both electrical insulation and a protective coating over the metal substrate.
Domestic Applications
Nylon coatings are also used on domestic products where components need to look good, feel comfortable and withstand regular use. These parts may be exposed to moisture, cleaning, handling, movement and everyday wear.
Common domestic uses
Nylon coatings may be applied to products such as:
- Dishwasher baskets and racks
- Handles and grips
- Wire goods and storage products
- Household fittings and brackets
- Appliance components
- Bathroom or kitchen metalwork
Key benefits for domestic products
Detergent resistance
Plastic Coatings lists detergent resistance as a domestic coating requirement. This is relevant to products such as dishwasher baskets, kitchen storage and appliance components that may be exposed to cleaning chemicals during use.
Tactile finish
Plastic Coatings identifies tactile finishes as part of the domestic coating requirement set. Nylon can provide a smooth, warm-to-touch handled surface on items such as grips, racks, household fittings and appliance parts.
Wear resistance
Wear resistance is listed by Plastic Coatings for domestic coatings, with typical components including draw runners, dishwasher baskets, refrigerator shelves and cookware. Nylon is relevant where repeated loading, sliding or handling may wear an uncoated metal surface.
Nuclear Applications
Nuclear applications require careful consideration of performance, quality and specification. Components may need protective, insulating or identifiable finishes, but coating suitability must always be assessed against the operating environment and relevant requirements.
Common domestic uses
Nylon coatings may be considered for selected components such as:
- Brackets and supports
- Handles, guards and covers
- Cable management components
- Fixings and fasteners
- Equipment frames
- Components requiring protection, insulation or identification
Key benefits for nuclear components
Impact and abrasion resistance
Plastic Coatings lists impact and abrasion resistance as nuclear coating properties. Nylon can be considered where a component requires a tough polymer coating to resist surface damage in service.
Electrical insulation
Electrical insulation is listed by Plastic Coatings as a nuclear coating property. Nylon may be suitable for selected components where an insulating surface is required, subject to the operating environment and project requirements.
Process control and compliance
Plastic Coatings states that nuclear coatings require strict process controls, quality checks and compliance with industry specifications. Working with an experienced coater is important because the coating system, preparation method and inspection requirements must be defined before production.
Specifying Nylon Coatings for Your Application
The performance of a nylon coating depends on more than the coating material itself. Surface preparation, process selection, masking, coating thickness and quality control all affect how the finished component performs in service.
Plastic Coatings has extensive experience applying nylon coatings for demanding industrial and commercial applications. By working with an experienced coater, engineers and procurement teams can identify the right coating process, avoid specification issues and ensure components are finished to suit their operating environment.
If you are assessing nylon coatings for a specific part, Plastic Coatings can provide practical guidance on coating suitability, application method, performance requirements and production considerations.
