Threaded Plugs
Threaded Plugs, also known as plastic threaded protection plugs, hydraulic plugs or threaded pipe plugs, are essential components used to seal and protect threaded holes across a wide range of industrial and commercial applications. Widely used throughout the manufacturing, automotive, hydraulics, pneumatics and engineering industries, these pipe plugs help prevent contamination, moisture ingress, corrosion and mechanical damage during storage, transportation, machining and assembly.
Our comprehensive Threaded Plug range includes both standard Threaded Plugs and Threaded Sealing Plugs, providing solutions for applications requiring either general thread protection or liquid-tight sealing. Compatible with BSP, UNF and Metric thread types, the range covers sizes from M8 to M42, 1/8" to 3" BSP and 5/16"-24 to 2 1/2"-12 UNF. Standard Threaded Plugs are manufactured from durable LDPE and are available in bright colours such as red and yellow for easy identification, whilst our Sealing Plugs are manufactured from robust HDPE and feature integrated nitrile O-rings to provide reliable liquid-tight and airtight sealing for hydraulic, pneumatic and fluid handling applications.
For non-threaded holes and panel openings, we also stock our range of Blanking Plugs, offering secure push-fit protection across a variety of panel and enclosure applications.
Key Features and Benefits:
- Comprehensive range including standard Threaded Plugs and Threaded Sealing Plugs
- Compatible with BSP, UNF and Metric thread standards
- Protects threaded holes from dirt, dust, moisture and corrosion
- Threaded Sealing Plugs feature integrated nitrile O-rings for liquid-tight sealing
- Manufactured from durable LDPE or HDPE depending on application requirements
- Simple installation and removal using ergonomic hand, screwdriver or socket drive designs
- Available in a wide variety of thread sizes and highly visible colours for easy identification
Common Use Cases:
- Protecting threaded holes during manufacturing, transport and storage
- Sealing hydraulic and pneumatic ports during servicing or shipping
- Preventing contamination inside pipework, valves and fluid systems
- Providing temporary liquid-tight seals during maintenance or pressure testing
- Safeguarding threaded components in automotive, engineering, oil & gas and industrial applications
Need Help Selecting Threaded Plugs?
Finding the correct Threaded Plug depends on the thread type, size and protection required for your application. Our team can help you choose a suitable option for sealing and protecting threaded holes, ports and fittings. Call 01233 713 581 for product guidance, quotations or larger order enquiries.
Trade customers can also register for a Vital Parts Business Account for trade pricing, product samples, credit account options and dedicated account support.
Frequently Asked Questions
Threaded Plugs are typically manufactured from durable LDPE (Low-Density Polyethylene), providing excellent impact resistance, flexibility and protection against moisture and many industrial chemicals.
Yes. Threaded Plugs are commonly used as hydraulic plugs to seal hydraulic ports and fittings during manufacture, servicing, storage and transportation, preventing contamination from entering sensitive hydraulic systems.
Yes. Threaded Plugs feature ergonomic heads that allow quick installation and removal by hand, making them suitable for fast-paced manufacturing and maintenance environments.
Yes. By sealing threaded holes against moisture, dust and contaminants, Threaded Plugs help reduce the risk of corrosion and protect precision threads from damage.
Standard Threaded Plugs are primarily designed to protect threaded holes from contamination and damage, whilst Threaded Sealing Plugs are manufactured with additional sealing features to provide a tighter seal against liquids, gases or pressure.
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.
You do not need to sign up to place an order, but it is recommended if you'd like to gain loyalty points, giving discount off future orders. To learn more about loyalty points, please view our rewards scheme page.
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 £20 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.
