Silicone Sponge

Silicone sponge offers excellent sealing performance with resistance to extreme temperatures, UV, ozone, and weathering. Ideal for demanding applications across multiple industries.

Scroll to Find Out More Request A Sample

What is Silicone Sponge?

Silicone sponge is a lightweight, closed-cell material engineered for demanding sealing, cushioning, and insulating applications…

Designed to perform in extreme environments, it delivers consistent reliability at continuous operating temperatures up to 200°C, maintaining flexibility and stability in both hot and cold conditions.

With a low compression set, silicone sponge retains its shape and sealing integrity even after repeated compression cycles. It is naturally flame-retardant and offers outstanding resistance to UV, ozone, and weathering, making it ideal for both indoor and outdoor use. A variety of colours can be supplied to meet specific customer or branding requirements.

Our company proudly supplies BISCO® silicone materials from Rogers Corporation, recognised globally as industry-leading solutions for gasketing, sealing, and thermal management. The BISCO® portfolio includes cellular, solid, and specialty silicone materials manufactured in roll form, ready for precision fabrication.

These high-performance products are widely used to create:

Gaskets
Heat shields
Fire stops
Seals
Cushions
Insulation components

BISCO® silicones are trusted for their exceptional durability, resilience, and consistency across critical applications.

Technical Information

Silicone Sponge Technical Details & Options

  • Performs from -60°C to +200°C (short-term peaks higher).

  • Available in soft, medium, and firm grades.

  • Excellent recovery properties for long-term sealing performance.

  • Available plain or with pressure-sensitive adhesive (PSA).

  • Supplied in standard colours; custom colours available on request.

  • Flame-retardant grades available; RoHS and REACH compliant.

Benefits

Why Choose Silicone Sponge?

Silicone sponge is the material of choice when applications demand durability, safety, and performance under extreme conditions.

  • High Temperature Resistance

    Performs reliably up to 200°C.

  • Low Compression Set

    Maintains sealing performance over time.

  • Weather & UV Resistant

    Excellent resistance to outdoor environments.

  • Flame Retardant

    Meets safety standards for fire performance.

  • Low Toxicity

    Suitable for sensitive environments.

  • Customisable Options

    Range of densities and colours available.

Request a Sample

Request a product sample to test performance in real-world conditions.

Our samples are a great way to evaluate suitability before scaling production and we’re here to support you every step of the way.

Request a Sample

Common Industry Uses

Where is Silicone Sponge Used?

Silicone sponge is widely used where sealing, insulation, and durability under extreme conditions are essential. RGH supplies silicone sponge solutions to:

FAQs

Frequently Asked Questions About Silicone Sponge

Got a question about silicone sponge? Explore our FAQs below.

  • What formats can silicone sponge be converted into?

    Silicone sponge can be manufactured and converted into a wide variety of formats to suit specific applications. These include sheets, rolls, gaskets, strips, pads, custom die-cut shapes and extrusions. This versatility makes it suitable for sealing, cushioning, and insulation tasks across many industries.

  • What are the main advantages of silicone sponge?

    Silicone sponge offers several significant benefits, including:

    • Exceptional temperature resistance (typically –60°C to +230°C)
    • Excellent sealing against dust, moisture, and environmental elements
    • UV, ozone, and weather resistance for long outdoor life
    • Low compression set, maintaining its shape under pressure
    • Electrical insulation properties
    • Chemical resistance and non-corrosive behaviour

  • What is silicone sponge commonly used for?

    Silicone sponge is used in a wide range of industries, including:

    • Electronics (gaskets, EMI shielding interfaces, cushioning)
    • Automotive (seals, vibration damping)
    • Aerospace (thermal insulation, lightweight seals)
    • Medical devices (non-reactive cushioning or sealing)
    • LED lighting (environmental seals)
    • General enclosure sealing where consistent compression and durability are required.

  • What is the Rogers BISCO® range?

    The Rogers BISCO® product range includes high-performance silicone foam and sponge materials designed for demanding sealing, cushioning, and protection applications. These materials are trusted for their reliability in harsh environments and are widely used in electronics, transportation, aerospace, and industrial systems due to their superior durability and thermal stability.

  • What is BISCO® HT-800 and why is it popular in electronics?

    BISCO® HT-800 is a medium-firm silicone foam known for its excellent compression and recovery characteristics. In electronics, it is valued for:

    • Effective sealing against dust and moisture
    • Absorbing vibration and protecting sensitive components
    • Long-term stability at elevated temperatures
    • Consistent performance over a wide temperature range

    HT-800 is commonly used in electronic enclosures, display assemblies, thermal interfaces, and cushioning applications

See All FAQ’s

Need Silicone Sponge for Your Next Project?

From extreme temperature sealing to weather-resistant gasketing, our team can help you specify the right silicone sponge solution cut, fabricated, and delivered fast.

Request a Sample Contact Our Team