Flame Retardent Silicone Sponge Strip

Here at Advanced Seals & Gaskets Ltd, we manufacture 1000’s high-quality silicone strips in both sponge and rubber forms, one type being Flame Retardant Silicone Sponge sometimes referred to as gasket strip, sealing strips or isolation strips.  Flame Retardant silicone sponge strips are all manufactured by our highly skilled workforce using state of the art machinery.  

By following customers' dimensions, drawings or samples, we can produce bespoke sized flame retardant silicone sponge strips using a choice of bandsaws, strippers, log cutter and even presses depending upon the size and quantity required.  In-house production allows us to closely oversee the whole production process ensuring we consistently produce high quality, competitively priced strips. 

Our flame retardant silicone sponge strips can be cut from 915mm x 1-meter sheets or continuous rolls of varying lengths depending on the grade and thickness required.  Flame retardant silicone sponge strips can be supplied in thicknesses ranging from 0.8mm and in widths starting at around 4mm wide, all manufactured with a choice of self-adhesive tapes or laminated to other materials in a choice of lengths, from just a few millimetres long to continuous lengths in coil or roll form.

What are Flame Retardant Silicone Sponge strips?

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 strips are cut from sheets or rolls to order, meaning we can supply them to meet your exact specifications in terms of lead time, size and finish.  Flame retardant silicone sponge strips can be used for noise and vibration control applications or as a gasket or seal, placed between two surfaces to create a low-pressure seal preventing the leakage of dust, liquids or gas.

Flame Retardent Silicone Sponge Strip

Product Enquiry

For information on Flame Retardent Silicone Sponge Strip 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 - 432kg/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 Retardent Silicone Sponge Strip

    Samples can be submitted for testing upon request.

    Call now for sample requests or further help.

    Why use Flame Retardant Silicone Sponge strips?

    Flame retardant silicone sponge uses the same formulation of silicone sponge but produces strips with more 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 strips are not only suitable for use in extreme temperature applications, but also for vibration, sound and thermal insulation, cushioning and sealing.

    Key Benefits of Flame Retardant Silicone Sponge

    • Various grades/densities 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

    Advantages of using Flame Retardant Silicone Sponge strips?

    Customers often choose flame retardant silicone sponge as their material for the production of strips 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 strips offer 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 strips are designed to offer exceptional insulation, anti-vibration, cushions and sealing even in the most unstable and harsh environments.

    Different Densities Available

    All of the densities below can be used as a sealing 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 Strips?

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