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Foam parts

Foam Bungs

Foam bungs
Foam parts

Foam Bungs

If you need to seal, protect, or temporarily close an opening, foam bungs provide a simple, lightweight solution.

Foam bungs are foam components designed to fit securely into holes, tubes, cavities, containers, and other openings. Also known as foam plugs, they can help prevent the ingress of dust, dirt, moisture, and debris. They are often used to protect products during storage and transit, or to temporarily seal equipment and components during manufacturing processes.

At Polyformes, we manufacture custom foam bungs from high-quality closed-cell foam in a wide range of shapes, sizes, and materials to suit your product and application. So whether you require a simple plug, a tapered bung, or a complex custom design, we can produce the right solution for your requirements.

No obligation
UK experts
Competitive pricing
Advantages

Benefits of foam bungs

The benefits of foam bungs include:

Helps to prevent dust, dirt and moisture ingress.
Lightweight and easy to install and remove.
Provides a secure fit without damaging surfaces.
Suitable for temporary and long-term use.
Resistance to water, chemicals, and many industrial environments.
Available in custom sizes, shapes, and densities.
Durable and reusable.
A person placing a custom foam bung in a fuel tank in a factory
Foam part experts

FAQs

A foam bung is a shaped piece of foam used to fill or seal an opening. Foam bungs are commonly used to protect products, prevent contamination, or temporarily close holes, tubes, and cavities during manufacturing or shipping.

Foam bungs are used across a variety of industries to protect products during storage and transit, seal openings during manufacturing, prevent contamination, and prevent dust, dirt, and moisture from entering parts or assemblies.

Foam bungs are commonplace across industries such as medical, pharmaceutical, marine, manufacturing, construction, engineering, and packaging. They can be adapted to suit almost any application where an opening needs to be protected or sealed.

Foam bungs typically use closed-cell polyethylene foams. These materials – such as Plastazote®, Evazote®, and Microlen – offer excellent durability, water and chemical resistance, and cushioning properties

A pile of industrial foam bungs on a workbench in a factory
Process

A partnership approach

We don’t just manufacture foam bungs and parts – we gain a detailed understanding of our business and challenges before proposing a cost-effective solution that does exactly what you need.

Understanding

We discuss your requirements with you, gaining a full, detailed understanding of your project.

Develop

Using your products or CAD data, we develop a solution using appropriate materials.

Test

We provide pre-production samples for testing and assurance on fit and quality.

Manufacture

We manufacture your products in-house at our specialist foam conversion facility.

Support

We forge long term relationships, providing ongoing support and assistance.

UK foam converters

Why work with us?

At Polyformes, our experience, expertise, and in-house conversion equipment enable us to provide your business with a wide range of benefits.

UK manufacture
We manufacture your custom foam products ourselves, allowing us complete control over design, quality, and lead times.
Short lead times
Our process – from initial meeting through design concept, samples, testing and manufacture – is quick, easy and focused on your requirements.
Foam experts
You can rely on our team of knowledgeable, experienced foam experts to select the optimal foam material, design, and production method for your application.
Single source
As part of Macfarlane Packaging, you can source a huge range of additional packaging and products from a single, easy-to-manage source.
Vast experience
Our approach means we’ll always consider your budget and balance this against the required performance and technical considerations.
Sustainability
As well as using recycled material where possible, we also place a strong emphasis on removing unnecessary materials, weight and volume from your products.
Wide range of options

Similar foam products

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UK experts

Get in touch

Send us a message

If you need high-performance foam inserts, packaging, products or materials, we can help. Please contact a member of our team for a free consultation and quote.

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    Our experts

    The information on this page was written and checked by our team of experts. You can contact them to discuss your requirements, or for any questions you may have, using the details here.

    Sales Enquiries

    [email protected]
    01525 852 444 (option 1)

    Accounts Enquiries

    [email protected]
    01525 852 444 (option 2)