Silicone Sponge Gaskets – Custom Sealing & Vibration Solutions
Advanced Seals & Gaskets Ltd (ASG) is one of the UK’s leading suppliers of silicone sponge gaskets, producing high-quality gaskets from foams, sponges, rubbers, plastics, and specialist papers. Our silicone sponge materials are available in various grades, colours, and thicknesses, and are precision-converted into bespoke gaskets to meet your exact requirements.
What Are Silicone Sponge Gaskets?
Silicone sponge gaskets are specially shaped components designed to fit between surfaces, providing low-pressure seals against leakage, dust, and gas intrusion.
Manufactured from heat-cured silicone sponge, this material expands into a closed-cell, low-toxicity, CFC-free elastomer, making it environmentally friendly while delivering excellent cushioning, vibration insulation, and sealing performance.
Our in-house manufacturing capabilities allow the creation of gaskets in:
- Plain or self-adhesive finishes
- Laminated variations
- Standard or intricate shapes with cutouts and notches
This ensures that every gasket, washer, or custom component precisely fits your application.
Why Use Silicone Sponge Gaskets?
Silicone sponge gaskets offer the mechanical performance of solid silicone, but in a softer, more flexible material, making them ideal for sealing, cushioning, and vibration dampening.
Key benefits include:
- Wide operating temperature range: -60°C to +260°C
- UV, ozone, and weather resistance – perfect for outdoor applications
- Closed-cell structure – moisture and dust resistant
- Excellent compression recovery – maintains original shape and thickness after compression.
Compared to other sponge materials, silicone sponge is more durable, resilient, and suitable for high-performance sealing applications. Its flexibility ensures a tight seal even under low compression conditions, making it ideal for HVAC units, electrical enclosures, and outdoor equipment.
Applications of Silicone Sponge Gaskets
Silicone sponge gaskets are widely used across industries requiring reliable sealing and vibration control, including:
- HVAC systems – preventing air and water ingress
- Electrical enclosures – ensuring dust and moisture protection
- Automotive and aerospace – cushioning and vibration dampening
- Food processing – compliant with hygiene standards
- Outdoor equipment – resistant to extreme weather, UV, and ozone exposure
Advantages of Silicone Sponge Gaskets
Using silicone sponge for gaskets and sealing components offers numerous advantages:
- Moisture-tight seals – ideal for outdoor or wet environments
- Gap filling & cushioning – reduces vibrations and protects machinery.
- Durable in extreme temperatures – suitable for high and low-temperature applications
- Flexible & resilient – maintains shape under compression.n
- Wide grade options – including flame retardant, food quality, high recovery, and thermally conductive
Product Enquiry
For information on Silicone Sponge Gaskets – Custom Sealing & Vibration Solutions please complete the following quick enquiry or call us on +44(0)1384 252555.
Product Specification & Key Characteristics
- Closed-cell material – water, dust, and moisture resistant
- UV & ozone resistant – withstands outdoor exposure
- Strong and durable – ideal for long-term applications
- Excellent recovery after compression – maintains sealing integrity.
- Available in multiple grades – including flame retardant, food quality, high recovery, high temperature, fluorosilicone, and thermally conductive options
Complete technical datasheets are available upon request or can be downloaded from our online portal.
Different Grades of Silicone Sponge Available
Advanced Seals & Gaskets offers a variety of silicone sponge grades to suit different requirements:
- Flame Retardant Silicone Sponge – ideal for construction and transport applications
- Food Quality Silicone Sponge – safe for food industry use
- High Recovery Silicone Sponge – excellent compression recovery
- High Temperature Silicone Sponge – withstands extreme heat
- Fluorosilicone Sponge – chemical and fuel resistant
- Thermally Conductive Silicone Sponge – for heat dissipation applications
Contact ASG for Custom Silicone Sponge Gaskets
For custom silicone sponge gaskets, washers, or converted components, contact Advanced Seals & Gaskets Ltd at 01384 252555. Our team will help you select the best grade and configuration for your application, delivering durable, reliable, and high-performance sealing solutions.
Please contact us using the form below or by calling us on +44(0)1384 252555.