Silicone Sponge Seals

Being one of the country’s largest cellular material converters and having a network of suppliers, ASG are able to offer a multitude of materials, including the highest quality range of silicone seals in various grades, colours and thicknesses.

Advanced Seals & Gaskets Ltd supply the highest quality silicone sponge seals taking the forms of gaskets, washers, O-rings, mouldings and extrusions, which are all designed for the purpose of preventing leaks or the ingress of air, fluids and gas.

All of our silicone sponge seals are made to order and are produced using samples or drawings provided by customers to ensure the final product perfectly fits the application. As each form of seal needs to be manufactured using a different process, ASG have invested heavily in various machinery meaning we can offer high or low quantities, whilst still maintaining a high quality finish and a competitively priced product.

Silicone Sponge Seals

Product Enquiry

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






    Key Characteristics of Silicone Sponge

    • Colour: Black, White, Red Oxide, Blue
    • Thicknesses available: 1mm to 45mm
    • Density: 200KG/M³ - 530KG/M³
    • Resistances: Ozone, Oxidation, Ultraviolet light,Corona discharge, Cosmic radiation, Ionising, radiation, and Weathering
    • Temperature Range: -60°C - 230°C

    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 Silicone Sponge Seals

    Samples can be submitted for testing upon request.

    Call now for sample requests or further help.

    What Are Silicone Sponge Seals?

    Silicone (SI) sponge is an elastomeric material, expanded during the heat-curing stage, which in return creates the closed cell structured sponge, which is low toxicity and CFC free which makes it an environmentally friendly material.

    Silicone Sponge is a highly versatile material, which can be used in place of its solid rubber variant, where a softer, conformable and compressible material is needed, designed to offer exceptional sealing, cushioning, vibration insulation and insulation properties. ‘Seal’ is a generic term for products often taking the form of cut gaskets, strips, washers, extruded or fabricated profiles. They are often used as a gap filler between surfaces, acting as a separator or a barrier to prevent liquids, particles or gases escaping or penetrating the application and in a number of vibration dampening, sealing and insulating applications.

    The Advantages of Using Silicone Sponge Seals

    Using Silicone sponge seals brings many advantages to users, and can be found utilised in many applications and throughout a range of industries due its durable and rugged nature. Silicone sponge is a closed cell material which means it is water resistant and can be used to create moisture tight seals.

    Some of the other excellent properties includes the materials wide operating temperature range of -60°C to 230°C, environmental resistant properties meaning it can withstand Ozone, UV and Corona Damage along with general weathering from rain, wind and frost etc where many other materials and rubbers can become brittle and crack.

    These excellent features make silicone sponge a great choice for the production of seals for use in many indoor or outdoor applications such as within HVAC units, light and electrical enclosures when a tight water seal is vital as well as for use in thermal insulation applications , as well as for sealing and vibration dampening.

    The material is manufactured in rolls and sheets in a range of standard thicknesses, from which flat seals such as washers or gaskets can be cut out, for more bespoke profiles, we can fabricate seals using multiple pieces of sponge and even have certain shapes extruded such as cords and o-ring seals.

    Why Use Silicone Sponge Seals?

    Silicone sponge Seals offer the superior mechanical properties and many of the performance benefits of solid silicone, but in a softer and more conformable and compressible form.

    Silicone sponge offer more strength and durability in comparison to other sponge materials, have excellent resistance to compression and recovery (bounce back to its original shape and thickness), a wide operating temperature range of around -60C to 260C, resistance to UV and ozone - therefore suitable for outdoor sealing applications.

    The closed cell structure of this material means it will make excellent sealing components for the prevention of leaks or ingress of air, dus and water, even with fairly low levels of compression.

    Benefits Of Using Silicone Sponge

    • UV & Ozone resistant
    • Strong and durable
    • Available in a variety of Grades
    • Excellent recovery following compression
    • Closed cell
    • Excellent sealing properties

    Different Grades of Silicone Sponge Available

    • Flame Retardant Silicone Sponge
    • Food Quality
    • High Recovery Silicone SPonge
    • High Temperature Silicone SPonge
    • Fluorosilicone Sponge
    • Thermally Conductive Silicone Sponge
    Have a Question about Acoustic Foam Gaskets?

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