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News 4 Aug 2026

Die-Cut vs. Waterjet Cut Silicone Gaskets

What’s the best choice for your production run? Selecting the right material is critical for manufacturing high-performance seals, but how...

News 23 Jun 2026

Rolling Stock Networking: Connect with CB Frost at RSN 2026

At CB Frost & Co, we don’t believe in waiting around when a great opportunity knocks. That is exactly why...

Door Seals

Rail

BISCO® HT800 Silicone Foam

HT800 silicone is medium cellular foam material with excellent compression set, memory and low stress relaxation properties. HT800 commonly reduces the maintenance costs involved with gasket failure due to its excellent compression set.

HT800 has excellent resistance to ultraviolet light and ozone, combined with a considerable low and high temperature range. It’s a material commonly used to reduce shock, isolate vibration and provide protection against wind driven rain and fire in various outdoor communications, electronics and lighting enclosures whilst also working effectively up to IP66 and IP67.

HT800 Silicone foam is Fire Safe – approved to EN45545-2, BS6853 Cat 1A, UL94 approved to V-0 and HF-1 and is approved by and commonly utilised by TFL on the London Underground.

BISCO® BF2000 Silicone Foam

BF2000 Silicone foam is an Ultra-soft and highly compressible foam material with excellent memory and low stress relaxation properties. Due to its high compressibility, BF2000 Silicone foam can be compressed into awkward gaps and shapes, making it ideal for transportation, industrial and electronic applications where low closure force and dust sealing on doors are critical.

Further beneficial properties of BF2000 Silicone foam are its excellent resistance to ultraviolet light and ozone, as well as effective resistance to extreme temperatures, both low and high. These characteristics mean that BF2000 is well suited for outdoor applications.

BF2000 Silicone foam sheeting is Fire Safe – approved to EN45545-2, BS6853 Cat 1A and UL94 approved to V-0 and HF-1.

MF775 (FR8775) Silicone Rubber

MF775 (FR8775) is a grey 73 shore A low smoke, low toxic silicone rubber specifically designed to manufacture rubber components where fire safe materials are critical in application (Rail). It has excellent resistance to UV and ozone combined with resistance to extremely low and high temperatures (-55ºC to +200°C) making it suitable for outdoor use.

MF775 (FR8775) is widely used by TFL on the London Underground as approved to fire safety standards EN45545-2, BS6853 Cat 1A and UL94 V-0 / HF-1.

MF775 silicone rubber can be produced in 3 formats, rolls which can then be slit to width (strips) or punched (die-cut) to form a gasket using our overhead presses. Extruded to shape, from simple U channels to more complex sections and finally moulded to suit the light fitting you are trying to seal within or outside of the rail vehicle.

MF775 (FR8775) Rubber can be supplied in various forms

LSLT EPDM (EPDM to EN45545-2) Rubber

LSLT EPDM rubber is available in 50, 60 & 70 shore A hardness and has excellent environmental resistance, withstanding Ozone, UV, rain, and frost. LSLT EPDM rubber is also resistant to corrosion, moisture, salt, and light fuels meaning the material is ideally suited for outdoor applications such as door and window seals, lighting systems and enclosures which need to be water and dust tight.

LSLT EPDM (ethylene propylene diene monomer) has been independently tested and certified by leading fire test laboratories throughout Europe and has been approved to fire safety standard EN45545-2 for rail.

LSLT EPDM Rubber can be supplied in various forms

Rail specialists

Explore other rail sectors

With over 40 years of experience within the rail industry, CB Frost & Co is your first-choice partner for an array of rail applications.

Acoustic Barriers

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Door Seals

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Gap Fillers

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HVAC Seals

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LCD Display Gaskets

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Lighting Enclosure Gaskets

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Seating Cushions

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Smoke Seals

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Vibration Isolation

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Partitioning

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Our vision for the future is to continue to be an efficient, well organised company that produces and supplies quality products, remaining as a market leader, whilst respecting the environment always.

Door Seals

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