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Threaded Caps

Threaded Plastic Caps, also known as Thread Protection Caps, Plastic Threaded Caps or Plastic Protective Caps, Threading Sealing Caps, are designed to protect exposed threads during transport, storage, finishing processes and maintenance. These protective caps help preserve thread integrity by preventing contamination, impact damage and corrosion across the UK's manufacturing, engineering, hydraulic and automotive industries.

Our range includes Metric, BSP (British Standard Pipe) and UNF Threaded Caps manufactured from durable LDPE. Available in a range of sizes and colours, including highly visible Yellow Sealing Caps, these plastic threaded caps provide a reliable solution for protecting threaded fittings, ports and connectors.

Alongside our standard Thread Protection Caps, we also supply Threaded Sealing Caps, also known as Fluid Sealing Caps. Featuring an integrated neoprene sealing disc, these Plastic Sealing Caps create a reliable seal to help prevent the ingress of dirt and moisture whilst reducing the risk of fluid or gas leakage. Available with Metric, BSP and UNF threads, they are easily tightened by hand and are ideal for sealing threaded pipes, ports, valves and containers.

Whether you require standard Thread Protection Caps or specialist Threaded Sealing Caps, our range offers quick installation, excellent thread protection and dependable sealing performance for industrial, hydraulic, pneumatic and fluid handling applications.

Available Options:

  • Manufactured from durable LDPE plastic
  • Available in Metric, BSP and UNF thread types
  • Knurled head for easy hand installation
  • Available in multiple sizes and colours

Key Features:

  • Protects threads against dirt, moisture and impact damage
  • Quick screw-on installation and removal
  • Reusable and lightweight design
  • Suitable for transport, storage and finishing processes
  • Custom sizes available on request

Common Applications:

  • Hydraulic and pneumatic fittings
  • Painting and powder coating
  • Pipework, ports and threaded connectors
  • Machinery, automotive and engineering components
  • Storage and transportation protection

Related Products:

Need Help?

Need help choosing the right Thread Protection Cap or Threaded Sealing Cap? Call our team on 01233 713 581 for expert advice, bulk pricing or custom solutions.

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    Frequently Asked Questions

    Threaded Caps are manufactured from durable LDPE (Low-Density Polyethylene), providing excellent flexibility, impact resistance and long-lasting protection for exposed threaded components.

    Threaded Caps are available to suit a wide range of thread types, including metric threads, BSP threads, UNF threads and other standard threaded fittings used throughout industrial applications.

    Yes. Manufactured from weather-resistant LDPE, Threaded Caps provide reliable protection against rain, dust, UV exposure and environmental contaminants, making them suitable for indoor and outdoor applications.

    Yes. Threaded Caps are durable and can often be removed and reused multiple times, making them a cost-effective solution for protecting threaded components during manufacturing and transport.

    Need your parts tomorrow? Our rapid same day dispatch has got you covered! Simply place your order before 4pm Mon-Thurs or 2pm Friday and select our Next Day Delivery service in the shopping cart. We also offer Guaranteed AM delivery when required, in addition to a Saturday delivery option.

    If you don't mind waiting, we have a Free delivery method for orders over £30, and an economic £4.85 2nd Class delivery for orders between £20-£30.

    Free Samples can be requested through our product pages, displayed in the sizing table beside the product you require. Please note you can always give us a call on 01233 713 581 or contact us on Live Chat to discuss samples.

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    If you're unsure which part you need then please do not hesitate to give one of our friendly Sales Team a call on 01233 713 581 and they can assist you. Alternatively, we're active on Live Chat during office hours. You can open this using the button in the bottom right corner of the website. Alternatively, you can write to us using our contact form.

    We offer a return period on all of our products to give you peace of mind, to view our policies and learn more about this process should it be required, please see our returns policy page.

    In most cases we have the facilities to offer you different colours of a product, specific to your requirements. Minimum order quantities may apply depending on the manufacturing technique in question, but please get in touch with any queries you may have.

    Please note that there is a minimum order value of £10 through our website (inclusive of VAT).
    If you're new to our website you may want to check out our frequently asked questions section for answers to common customer queries.

    While browsing the website you may come across abbreviations used for material names that you are unfamiliar with. You can find an explanation for these in our material abbreviations guide.