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Washer Masking Plugs

Variations Of Washer Masking Plugs

Washer Masking Plugs
These Flanged Rubber masking plugs, or Powder coating plugs as they are also referred to are an excellent choice for covering the lip of a hole. Made to fit to the inside of the hole these plugs have a 'washer' ring on the outside to cover the surrounding lip of a hole, preventing the need for tape or a similar additional high temperature product. These are an excellent all in one solution, manufactured from a premium Black Thermoplastic rubber. Also known as high temperature masking plugs or simply as a flanged plug, these are a popular product inside a number of industries that regularly use heat.
Silicone Washer Plugs
As a popular form of High Temperature Silicone Bungs these feature two different sides that can cover different diameters, providing a multi-purpose product that is able to fit a number of hole sizes. Also coming with a washer disc in the centre these act in a similar way to a flanged product in the sense that they can cover the area around the hole, hence their popular use as Silicone Stoppers. Made from a quality and resistant form of high temp Silicone rubber and coming with a Red finish these are easily able to stick out of an application, making for both easy installation and removal from the application that is being coated, covered or masked off.

Every one of our High Temp Washer Masking Plugs has been designed and manufactured with high temperature masking in mind. They are made from a thermoplastic rubber, allowing a resistance of up to 125°C. Each of these High Temp Washer Masking Plugs has good acid resistance, along with a number of other resistance properties which help make it a truly multi-purpose solution.

These Flanged Rubber Plugs are excellent for use when coating, covering, and baking, as well as a multitude of other high temperature masking applications. This is due to the 'flanged washer' section of the plug, which covers the lip of the hole it is plugging.

Our Rubber Washer Masking Plugs are available in a wide range of sizes and variants to suit, from a small 3.2mm hole diameter all the way up to a significantly large 47mm. This is to ensure we have the best range possible for your application. These are great for general holes, such as alloy wheel bolts holes and threaded holes.

See our full range of High Temperature Masking products by clicking here.

Why choose our High Temp Washer Masking Plugs?

  • Manufactured from a High Temperature Thermoplastic Rubber
  • Number of resistance properties including Acids
  • Flanged for a larger, fuller coverage
  • Available in a large number of sizes
Need assistance choosing the Washer Masking Plug for you? Call us on 01233 713 581

What Delivery Services are available?
We offer free 3-5 Day Delivery for orders over £15, £4.85 2nd Class Services for orders below £10 and £2.85 for orders £10-15. We also offer Next Day Delivery for £12.50 along with Guaranteed AM Delivery if required, collection can be arranged free of charge from our warehouse. For international shipping prices please use the shipping calculator on the cart page, once a product is inside your cart.

Can I get a Free Sample?
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 over Live Chat to discuss samples.

Do I need to Sign Up for an account?
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 see our Rewards Scheme page.

I am not sure what parts I need?
If you're unsure of what 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 regularly active on the Live Chat and are always open for questions. 

Do you offer Returns on Products?
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.

Can you supply different colours of this product?
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.

To view our full Frequently Asked Question section, please click here

To find out more about the different material abbreviations used on site, please click here

Welcome to Vital Parts
One of the largest and most trusted Plastic & Rubber Component Manufacturers in the UK.


We are able to offer 30 day end of month accounts to businesses who regularly use our products, with priority free samples, priority delivery and your very own dedicated account manager. As a manufacturer we offer a comprehensive range of components, covering almost every industry imaginable. We hold an un-beatable range of sizes and product options, so be sure to look around. We are always here to give you support as and when you need it, with Live Chat and Telephone Support available between 9am to 5:30pm, Monday to Friday. Get in touch, we would love to speak to you. We operate a 24 hour dispatch service so that you can get your goods quickly and efficiently, with a final cut off time of 4pm. Order before 4pm with next day delivery for a 24 hour turn-around.


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Vital Parts UK, Unit 17 Palace Industrial Estate, Bircholt Road, Maidstone, Maidstone, ME15 9XU