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Washer Masking Plugs

Every one of our High Temp Washer Masking plugs has been designed and manufactured with high temperature masking in mind, being made from a Thermoplastic rubber allowing a resistance of up to 125c. These Flanged rubber plugs are excellent for use when coating, covering and baking, as well as a multitude of other high temperature masking applications due to the 'flanged washer' section of the plug which covers the lip of the hole it is plugging. 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.

Our Flanged rubber 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 significant 47mm to ensure we have the best range possible for your application. 

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
Looking for more masking products? See our huge Powder coating masking section.

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.

Please click through to find all available product sizes.
For all relevant product information, or to view our available guides, please see the full category description above.


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


Being one of the most trusted components manufacturers and distributors in the UK, we pride ourselves on providing our customers with the best services and products possible. Ensuring that we stay competetive by providing you with the best deal, along with free samples and secondary finishing services to give you the best outcome possible. As well as offering an excellent range of components we are able to manufacture to your specific requirements with a range of dip moulding, injection moulding, extrusions, rotational moulding and overmoulding techniques.


Why you should choose us for your Plastic, Rubber & Metal Component needs
Fast, free packaging and shipping at all times
Bulk discounts available on all products
Free sampling available on most products
Excellent, friendly customer support on 01233 713581

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