Flame Retardant Silicone Sponge Gasket

Advanced Seals & Gaskets Ltd we manufacture a diverse range of sponge gaskets, including those made using various grades of silicone rubber.  One of our more specialist grades of silicone sponge is Flame Retardant Silicone Sponge.  Flame retardant silicone sponges can be supplied either as 915mm x 1-meter sheets or continuous rolls of varying lengths depending on the grade and thickness required. 

Flame retardant silicone sponge can be supplied in thicknesses ranging from 0.8mm right up to 25.4mm, but again these thicknesses vary between densities from which gaskets can be cut. Flame retardant silicone sponge gaskets are produced in-house, meaning we can manufacture bespoke items to match our customer's samples or drawings, from a simple rectangular picture frame gasket, to a more complex shape with cut-outs, notches or bolt holes,  whether it’s a small sample batch or a multi-thousand run, we have a machine designed to quickly and accurately produce perfectly formed gaskets every time. 

Our onsite facilities house a range of state of the art conversion machinery including a range of presses, CNC machines, slitting machines and log cutters, enabling us to take these sheets and cut them into gaskets of any shape and in most sizes, for very large gaskets they can be fabricated using multiple sheets and made up in sections and put together in a similar way to pieces of jigsaw puzzles.

What are Flame Retardant Silicone Sponge Gaskets?

Flame retardant silicone sponge has all the properties of standard silicone sponge but with extra additives mixed into the formulation to create a more superior product.  The sponge compound is chemically expanded and heat-cured to create the closed cell structure, giving the material the performance benefits of solid silicone, but in a softer form with useful properties of sponge, such as softness, flexibility and conformability.   

Flame Retardant Silicone sponge gaskets can be made in the form of a strip or pad, but are generally an intricately cut shaped piece of material placed between two surfaces to create a low-pressure seal preventing the leakage of liquids or gas and to seal against the intrusion of dust and debris and to reduce excessive movement or vibration between components.

Flame Retardant Silicone Sponge Gasket

Product Enquiry

For information on Flame Retardant Silicone Sponge Gasket please complete the following quick enquiry or call us on +44(0)1384 252555.






    Product Specification & Key Characteristics

    (All of the below will vary between grades and densities)

    • Colour: Grey, Black, White
    • Working Temperature Range: -55°C to + 200°C
    • Density: 160 - 432 kg/m2
    • Sheet size availability: 915mm x 1m or in continuous rolls
    • Thickness available: 0.8mm - 25.4mm - depending on density
    • Standards: BS6853, GM/RT 2125, LUL, NF F 16-101, UL-94 V-0, HF1

    Full technical data can be supplied upon request,
    or downloaded from our online portal.

    Help and guidance

    If you would like to speak to a representative to discuss your specific application or requirements please call our sales office direct on 01384 469100, alternatively you can send an E-mail. Simply click on the link and forward us your details along with your question and we will contact you immediately.

    Samples - Technical Flame Retardant Silicone Sponge Gasket

    Samples can be submitted for testing upon request.

    Call now for sample requests or further help.

    Why use Flame Retardant Silicone Sponge Gaskets?

    Flame retardant silicone sponge uses the same formulation of silicone sponge but produced gaskets with superior mechanical properties including improved tear and tensile strength and abrasion resistance. 

    It offers excellent resistance to environmental factors resisting excessive damage caused by Ozone and general weathering, including frost where other rubber materials would crack or become brittle. 

    Flame retardant silicone sponge gaskets are not only suitable for use in extreme temperature applications, but also for vibration, sound and thermal insulation, cushioning and sealing.

    Advantages of Using Flame Retardant Silicone Sponge Gaskets?

    Customers often choose flame retardant silicone sponge as their material for gaskets as it offers a number of excellent characteristics and properties, including UV and ozone resistance making it suitable for internal and external applications.  Flame retardant silicone sponge offers a wide operating temperature range of -55°C to + 200°C, with an even higher temperature grade available upon request. 

    Its closed-cell structure offers excellent sealing for water, with low levels of compression, and also gives the material an excellent compression set resistance (its ability to return to its original shape and thickness following compression). 

    Flame retardant silicone sponge gaskets are designed to offer exceptional insulation, anti-vibration, cushions and sealing even in the most unstable and harsh environments.

    Key Benefits of Flame Retardant Silicone Sponge

    • Various grades/densities are available to meet different standards
    • Weathering, UV and Ozone resistance
    • Wide operating temperature range
    • Easy to cut into different parts 
    • Will hold self-adhesive and foil backings
    • More durable than standard silicone sponge

    Different Densities Available

    All of the densities below can be used as a gasketing material used to prevent the ingress and penetration of air, dust and water, even with some sponge options having an open cell structure, as well as offering good resistance to weathering, UV, Ozone and ability to withstand extreme temperatures and environments, however, the density of each will offer features and benefits suited to different applications:

    Medium - Excellent shape memory as well as low-stress relaxation. The superior shape memory makes this particular grade ideal for use in the manufacture of gaskets. 

    Firm - Offers a higher tear resistance and superior tensile strength making it more durable and suited to sealing applications.

    Extra Firm - Offers greater conformability and even pressure distribution even at high temperatures, often used in the manufacture of press pads for heat transfer machines.

    Extra Soft - an open cell structure that is highly compressible meaning it can still offer protection and sealing against dust, moisture and air.  This grade is often selected for sealing enclosures and protecting electronics from heat and shock.

    Ultra Soft Density - is highly conformable and can be manipulated into gaps of varying widths and awkward shapes, offering excellent shape memory even after long periods of time under compression.

    Have a Question about Flame Retardant Silicone Sponge Gaskets?

    Please contact us using the form below or by calling us on +44(0)1384 252555.