Armaflex Class O Insulation Foam Gaskets

CB Frost are an established UK manufacturer of sponge, foam, and rubber gaskets.

The materials we covert from sheeting to gasket are either closed cell, open cell, semi-closed cell sponge, foam, or solid rubbers.

Gaskets can be produced in a variety of manufacturing processes including Die Cut, Water Jet Cut and Kiss cut. All services CB Frost cater for.

Gaskets are packed securely into suitable packaging and labelled in accordance with our customer requirements. Additional packing options such as barcoding, individual polybag, and cardboard separation are also available.

CB Frost also offer the possibility of a door to door service providing our customers with the peace of mind that items will arrive safely, securely and in time.

Armaflex Class O sponge is a lightweight, closed cell flexible insulation foam for reliable and continuous condensation control. BS476 approved to parts 6 & 7, it has a unique micro-cell structure that makes the foam easy to install with no additional vapour barrier requirements.


Tooling continues to be very important in the manufacture of die cut gaskets. Thanks to the company's long-standing history, we work with a variety of well-established tool makers in the West Midlands region.

Adhesive backed Armaflex Class O Insulation Foam Gaskets

CB Frost can apply a pressure sensitive adhesive to either one or both faces of Armaflex Class O sponge. We stock a wide range of synthetic and acrylic tapes, our adhesive tapes come with an easy peel release liner which you simply remove to expose the adhesive. This face is then placed on to the substrate and firmly pressed to obtain the bond.


Our lead-time to supply plain Armaflex Class O sponge gasket is 7 working days. Adhesive backed Armaflex Class O sponge gasket is 7-10 days, however CB Frost are flexible and work with our customers to ensure we meet their expectations.

Armaflex Class O Sponge Gasket Capabilities

CB Frost produce vast amounts of Armaflex Class O sponge gaskets every year and cater for small, medium, and large runs. Our manufacturing range includes Die Cut, Water Jet cut, Kiss cut, and High-Speed cutting processes providing our customers with a vast array of options dependent on the applications requirements.

Armaflex Class O sponge gaskets are manufactured at our site in Nechells, Birmingham based in the West Midlands.

Armaflex Class O Sponge thicknesses

3mm, 10mm and 13mm 

Additional thicknesses available upon request.

Free of charge Armaflex Class O Sponge samples

CB Frost will supply free of charge a small sample of Armaflex Class O sponge to your required thickness for testing before committing to an order.


  • Plain or adhesive backed Gaskets

  • Double sided adhesive backed Gaskets

  • Kiss Cut Gaskets (Supplied on a roll)

  • Water Jet Cut gasket when using a thicker material

  • BS476 Approved – Part 6 & 7

  • Excellent resistance to the effect of Ozone, oil and chemicals


Insulation Foam Class 0 Strip

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Insulation Foam Class 0 Washers

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Insulation Foam Class 0 Sheeting

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Armaflex Class O Insulation Foam Gaskets SAMPLE REQUEST

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Office Hours

Monday to Thursday
8.00am to 4.35pm
Friday - 8.00am to 1.00pm

Get in touch

Unit C1, Matrix Point, Mainstream Way, Nechells, Birmingham: UK: B7 4SN