Flame Retardant Silicone Sponge Washers
Premium Flame Retardant Silicone Sponge Washers
At Advanced Seals & Gaskets Ltd, we are one of the UK’s leading manufacturers and suppliers of non-metallic washers, including specialist flame-retardant silicone sponge washers. Our washers are made from high-quality flame-retardant silicone sponge, designed to offer superior heat resistance, durability, and sealing performance for demanding industrial applications.
We supply flame-retardant silicone sponge washers as 915mm x 1m sheets or continuous rolls, with thicknesses ranging from 0.8mm to 25.4mm, depending on density and application requirements. Every washer is manufactured in-house using skilled operators and advanced machinery, including oscillating knives and presses, ensuring precision, consistency, and cost efficiency.
What are Flame Retardant Silicone Sponge Washers?
Flame-retardant silicone sponge washers combine all the benefits of standard silicone sponge with additional flame-retardant additives. The compound is chemically expanded and heat-cured to create a closed-cell structure, offering softness, flexibility, and excellent conformability, while maintaining the performance advantages of solid silicone.
A washer is a flat ring of material with Outer Diameter (OD) and Internal Diameter (ID) specifications, designed to reduce friction, prevent unsteadiness, and create level surfaces for bolts, nuts, and other fixings. These washers also provide waterproof and airtight sealing, enhancing reliability in industrial applications.
Product Enquiry
For information on Flame Retardant Silicone Sponge Washers please complete the following quick enquiry or call us on +44(0)1384 252555.
Product Specification & Key Characteristics
- Colour Options: Grey, Black, White
- Working Temperature Range: -55°C to +200°C (higher grades available on request)
- Density Range: 160 - 432 kg/m³
- Sheet Sizes: 915mm x 1m or continuous rolls
- Thickness Range: 0.8mm - 25.4mm (depending on density)
- Standards: BS6853, GM/RT 2125, LUL, NF F 16-101, UL-94 V-0, HF1
Complete technical data available upon request or via our online portal.
Why Choose Flame Retardant Silicone Sponge Washers?
Flame-retardant silicone sponge washers are widely used across industries due to their high-performance properties:
- UV and Ozone Resistant: Suitable for both internal and external applications
- Wide Operating Temperature Range: Effective from -55°C to +200°C
- Closed-Cell Structure: Provides excellent waterproof sealing with minimal compression
- High Compression Set Resistance: Maintains original shape after repeated compression
- Durable and Flexible: Ideal for harsh and unstable environments
- Customisable: Available in multiple thicknesses, densities, and grades for specialised applications
Advantages of Flame Retardant Silicone Sponge Washers
- Various grades/densities to meet different performance standards
- Weathering, UV, and ozone resistance for long-lasting durability
- Easy to cut and shape into washers, gaskets, or seals
- Compatible with self-adhesive and foil backings
- Superior to standard silicone sponge in extreme conditions
Grades of Flame Retardant Silicone Sponge Washers
- Medium Density: Excellent shape memory and low-stress relaxation, ideal for gasket manufacturing.
- Firm Density: Higher tear resistance and tensile strength make it suitable for demanding sealing applications.
- Extra Firm Density: Offers greater conformability and even pressure distribution, commonly used in press pads for heat transfer machines.
- Extra Soft Density: The open-cell structure with high compressibility is perfect for sealing against dust, moisture, and air, protecting sensitive electronics.
- Ultra Soft Density: Highly conformable and adaptable to irregular gaps, providing excellent long-term shape memory under compression.
Applications of Flame Retardant Silicone Sponge Washers
- Electrical and Electronics Enclosures: EMI shielding and environmental protection
- Industrial Machinery: Vibration-damping and heat-resistant sealing
- Transportation & Automotive: Sealing in engines, panels, and HVAC systems
- Construction: Fire-safe sealing for joints and insulation
- Medical Equipment: High-temperature, non-toxic seals for sensitive devices
Benefits of Flame Retardant Silicone Sponge Washers
- Wide temperature range and flame-retardant properties
- Excellent sealing, cushioning, and anti-vibration performance
- Customisable thickness, diameter, and density for specialist applications
- Durable and weather-resistant for both indoor and outdoor use
- Provides airtight and watertight seals for enhanced equipment protection
At Advanced Seals & Gaskets Ltd, our flame-retardant silicone sponge washers are manufactured to the highest UK standards, offering unmatched performance, reliability, and longevity. Whether for industrial, automotive, electronics, or construction applications, we provide custom solutions to meet the exact requirements of your project.
Please contact us using the form below or by calling us on +44(0)1384 252555.