Armaflex Rail SD & SD-C Strip

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

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

CB Frost formed a strong partnership with Armacell UK back in 2018 to be its distributor of Armaflex Rail SD insulation materials within the UK.

Armaflex® Rail SD & SD-C sponge is the worlds first flexible closed cell insulation material to meet EN45545-2 fire protection requirements.

It is the leading and most innovative closed cell thermal insulation available to the railway industry worldwide and comes complete with a built-in vapour barrier reducing the risk of corrosion under insulation (CUI).

Armaflex® Rail SD & SD-C foam has been developed to produce extremely low smoke density and reduce the risk of mould and mildew contributing to an improved indoor air quality.

Adhesive Backed Armaflex Rail SD & SD-C Foam Strip

CB Frost can apply a pressure sensitive adhesive to either one or both faces of Armaflex Rail SD & SD-C foam. 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 or Adhesive Backed Armaflex Rail SD & SD-C strip is 2-3 weeks, however CB Frost are flexible and work with our customers to ensure we meet their expectations.

Armaflex® Rail SD & SD-C Foam Strip Capabilities

CB Frost are a leading supplier of Armaflex Rail SD & SD-C Foam strip and produce large volumes every year. We cater for small, medium and large runs. Our slitting capabilities allow us to offer our customers a range of widths and can manufacture strip from 5mm wide.


We supply Armaflex Rail SD Foam in coils and Rail SD-C Foam in straight 2mtr lengths. The length of each coil is based on thickness this can range from 4mtrs up to 10mtrs long. However, we do have the facility to cut rolls and supply smaller coils.


Coils are packed securely into suitable packaging and labelled in accordance with our customer requirements.

Armaflex Rail SD & SD-C rail foam strip is manufactured at our site in Nechells, Birmingham based in the West Midlands.


  • Plain, Single or Double Sided Adhesive Backed Strip

  • Cut to length

  • EN45545-2 approved

  • Closed Cell Insulation

  • Low Thermal Conductivity

  • Built in Microban, antimicrobial protection

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

We have the capabilities to convert Armaflex Rail SD & SD-C Strip into various shapes/strips/tapes etc, please click on the below for further details or visit our products section within the website.


Armaflex Rail SD & SD-C Gaskets

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Armaflex Rail SD & SD-C Washers

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Armaflex Rail SD & SD-C Sheeting

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Armaflex Rail SD & SD-C Strip SAMPLE REQUEST

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Our Partners

Dependable on-time
Full lot traceability on
raw material
Rapid lead times on tooling
and products
Manufacturing services from 1-off
to mass production
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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