AHD Silicone Foam Sheet: High-Temperature Resistant Sealing & Insulation Solution
Product Overview
AHD Silicone Foam Sheet is a premium elastomeric composite material, engineered by adding high-purity foaming agents to medical-grade or industrial-grade silicone rubber, followed by precision heating, foaming, and curing. It forms a uniform closed-cell structure that combines the inherent advantages of silicone with the lightweight, compressible properties of foam.
As a specialized product from AHD Polymer (a 31-year leader in engineering plastics), this silicone foam sheet is produced via ISO-certified processes, supported by 200+ technical specialists (including 30+ senior engineers). It delivers consistent batch-to-batch quality, meeting strict requirements across automotive, electronics, healthcare, and food industries, and outperforms traditional foam materials in temperature resistance and environmental stability.
AHD Silicone Sponge Rubber Sheet Rolls
What is Silicone Foam Sheet?
Silicone foam sheet (someone call it Silicone Sponge Sheet) is a flexible, porous material made by introducing controlled bubbles into silicone rubber through a foaming process (chemical or physical foaming agents) and curing at specific temperatures. Its core structure is mostly closed-cell, which gives it lightweight characteristics while retaining silicone’s signature resistance to extreme temperatures, chemicals, and environmental aging. Unlike solid silicone sheets, it offers compressibility and buffer performance, making it ideal for sealing, insulation, and vibration damping scenarios. It is available in various densities, hardness levels, and thicknesses to adapt to diverse industrial needs.
Core Advantages
Performance Advantages
Extreme Temperature Resistance: Operates stably from -60°C to 220°C (short-term up to 250°C), resisting freezing cracking in low temperatures and softening/deformation in high temperatures—outperforming most foam materials.
Superior Sealing & Insulation: Closed-cell structure minimizes water absorption (≤5%) and effectively blocks dust, moisture, and air, while providing thermal insulation and electrical insulation (dielectric strength ≥1.6 kV/mm).
Excellent Elasticity & Compression Recovery: Low compression set (≤5%) ensures it retains shape after long-term compression, delivering durable sealing and vibration-damping performance.
Environmental & Chemical Stability: Resists UV radiation, ozone, aging, and corrosion from weak acids, alkalis, oils, and industrial solvents—maintaining performance for 8–10 years in harsh environments.
Safety & Compliance: Non-toxic, odorless, and available in food-contact (FDA certified) and medical-grade variants, with UL94 V-0 flame retardancy to reduce fire risks.
AHD’s Unique Advantages
31-Year Silicone Material Expertise: Proprietary foaming technology ensures uniform bubble distribution (no large pores or gaps), avoiding sealing failures common in low-cost sheets with uneven foaming.
Dual-Grade Material Customization: Offers industrial-grade (cost-effective for machinery) and medical/food-grade (high-purity for sensitive applications) options, meeting diverse compliance needs.
Precision Production: Manufactured with strict control over thickness tolerance and compression set—guaranteeing consistent performance across batches.
AHD Silicone Foam Rubber Sheet Rolls
Application Fields & Specific Use Cases
Silicone foam sheet’s versatility makes it indispensable in industries requiring temperature resistance, sealing, or buffer performance:
Electronics & Electrical Industry: Insulation & Thermal Management
Electronic Device Seals: 1mm–5mm sheets are used as gaskets for smartphones, laptops, and industrial controllers. They seal against dust/moisture and dampen vibration, protecting internal components from damage.
High-Voltage Equipment Insulation: 2mm–8mm sheets serve as insulation pads in inverters, transformers, and EV chargers. Their electrical insulation (volume resistivity ≥10¹¹ Ω·m) prevents short circuits, even when heated.
LED Lighting Components: 3mm–6mm sheets act as thermal buffers between LED chips and heat sinks. They resist high temperatures from LED operation, extending bulb lifespan.
Healthcare & Food Industry: Safe Sealing & Cushioning
Medical Device Components: 1mm–5mm medical-grade sheets are used as seals for ventilators and dialysis machines. They are non-toxic, odorless, and compatible with autoclave sterilization (up to 134°C).
Food Processing Equipment: 2mm–8mm food-grade (FDA certified) sheets serve as gaskets for food mixers, packaging machines, and refrigeration units. They resist food acids (e.g., vinegar) and are easy to clean—meeting hygiene standards.
Industrial Machinery & Construction: Harsh-Environment Sealing
Machinery Gaskets: 5mm–15mm sheets are used as gaskets for pumps, valves, and industrial ovens. Their chemical resistance withstands oils, coolants, and high temperatures (up to 220°C), preventing leaks.
Building Weatherproofing: 10mm–20mm sheets are used as window frame seals and wall insulation pads. They resist UV radiation and aging, maintaining sealing performance for over 10 years in outdoor environments.
Sound Insulation Materials: 15mm–30mm thick sheets are used in factory workshops and equipment enclosures. Their porous structure absorbs noise, reducing operational noise pollution.
Comparison with Other Foam Materials (Advantages & Disadvantages)
| |
AHD Silicone Foam Sheet |
Polyurethane (PU) Foam Sheet |
| Temperature Resistance |
-60°C to 220°C (excellent) |
-20°C to 120°C (limited) |
| Chemical Resistance |
Resists oils, acids, alkalis (excellent) |
Poor resistance to oils/solvents |
| Flame Retardancy |
UL94 V-0 (excellent) |
Requires additives for flame retardancy |
| Safety |
Non-toxic, FDA/medical-grade available (excellent) |
May contain harmful additives |
| Cost |
Higher (disadvantage) |
Lower (advantage) |
| Key Advantages |
Extreme temperature resistance, chemical stability, safety compliance |
Low cost, high flexibility |
| Key Disadvantages |
Higher price point |
Poor high-temperature and chemical resistance |
FAQ (Frequently Asked Questions)
Q1: Does AHD provide samples for testing?
A: Yes. Please feel free to contact us if you require samples.
Q2: What is the service life of the sheet in outdoor applications?
A: Thanks to UV and ozone resistance, it maintains performance for years in outdoor environments (e.g., building seals), outlasting PU foam and neoprene foam .
Q3:Does silicone foam board require special maintenance during daily use? Is it prone to dust accumulation or bacterial growth?
A: Targeted maintenance is required, but its porous structure is not a disadvantage as it can trap dirt and grime. Proper cleaning is sufficient to maintain hygiene:
Cleaning Method: Food residue easily adheres to the surface pores. It is recommended to gently brush with a soft-bristled brush dipped in neutral detergent, then rinse with clean water (avoid using a high-pressure water gun to break up the pore structure); it can withstand 121℃ high-pressure steam sterilization.
Dust Prevention Tips: Regularly apply food-grade silicone grease to the surface to fill the tiny pores and reduce dust adhesion; avoid prolonged exposure to dusty environments (such as flour mills), otherwise, increase the cleaning frequency.
Durability Tips: Although it has excellent elasticity, long-term compression (such as fixing heavy objects) may cause permanent deformation. It is recommended for dynamic sealing or light-load scenarios (such as shock-absorbing pads). For heavy loads, solid boards or thickened foam boards should still be selected.
