| No. | Physical Property (EN) | Test Method | Value |
|---|---|---|---|
| 1 | Hardness (Shore C) | Type C Durometer | 25±5 |
| 2 | Density (g/cm³) | ASTM D1056 | 0.35±0.1 |
| 3 | Compression Set (%) | ASTM D1056-Test D | <10 (70℃) <20 (100℃) |
| 4 | Tensile Strength (kPa) | ASTM D412 | >400 |
| 5 | Elongation at Break (%) | ASTM D412 | >150 |
| 6 | Flame Retardancy | UL94 Standard | V0-V1-V2 |
| 7 | Toxic Gas Emission Rating | SMC-S00 | Passed |
| 8 | REACH/ROSH/PAHS/Halogen Compliance | / | Qualified |
| 9 | Low Temperature Flexibility at -40℃ | ASTM D1056 | Qualified |
| 10 | Recommended Operating Temperature (℃) | SAE J2236 | -40℃ ~ 180℃ |
High Temperature Silicone Foam Strip
Our High Temperature Silicone Foam Strip is manufactured from premium closed-cell silicone foam material, specifically designed for demanding industrial sealing and insulation applications. By combining the natural temperature resilience of silicone rubber with a highly compressible cellular structure, it offers excellent flexibility, superior compression recovery, and long-term durability under extreme environmental conditions.
With a continuous operating temperature range from -60°C to +250°C, this extruded silicone foam cord maintains stable mechanical performance without cracking, shrinking, or hardening. It acts as an impenetrable barrier, providing outstanding resistance to UV radiation, ozone exposure, moisture ingress, aging, and a wide range of industrial chemicals. This makes our silicone foam strips highly reliable for both rigorous indoor manufacturing environments and harsh outdoor weather conditions.
Available in various profiles—including round, square, D-shape, P-shape, and custom complex extrusions—our silicone foam seals can also be supplied with high-strength pressure-sensitive adhesive (PSA) backing for rapid, secure installation.
As a Dongguan-based silicone foam manufacturer with more than 15 years of material development and manufacturing experience, SENMA supports custom production for electronics, automotive, battery, industrial sealing and high-temperature applications. Standard and custom profiles can be produced with project-specific dimensions, density, hardness, color and adhesive backing.
Unlike traditional rubber components that degrade under thermal stress, our silicone foam strips perform reliably from -60°C to +250°C. They remain pliable in cryogenic conditions and resist melting or deformation in high-heat industrial processes. This wide operating range supports use in electronics, battery systems, industrial equipment and high-temperature manufacturing environments where sealing integrity and thermal stability are essential.
Thanks to its optimized closed-cell structure, the material maintains excellent "memory" and elasticity after repeated compression cycles. This ensures a tight, continuous seal over years of operation without premature flattening or material fatigue. The foam retains its shape and elasticity after prolonged compression, helping maintain sealing pressure, extend service life and reduce long-term maintenance requirements.
The closed-cell configuration prevents the passage of foreign elements, providing effective and long-lasting protection against:
Closed-cell silicone foam also provides strong resistance to water, moisture and environmental contaminants, making it suitable for outdoor equipment, electrical enclosures and industrial sealing applications.
For critical applications in transportation and electronics, our foam strips can be formulated to meet stringent UL94 V-0 flame retardant ratings, significantly enhancing overall fire safety. Industrial-grade silicone foam is widely used in electronics, battery and transportation applications where flame-retardant performance and electrical insulation are important.
Engineered to withstand harsh industrial environments, the strips exhibit excellent resistance to weak acids, alkalis, lubricating oils, ozone, UV rays, and general weathering without deteriorating. They also perform in outdoor conditions exposed to continuous sunlight, humidity and thermal aging, helping protect long-term sealing performance.
| Property | Specification |
|---|---|
| Material | Closed Cell Silicone Foam Elastomer |
| Manufacturing Process | Continuous Extrusion |
| Color | Red, Black, White, Gray (Custom colors available) |
| Temperature Range | -60°C to +250°C |
| Density | Customizable based on application needs |
| Hardness | 10-40 Shore OO |
| Water Absorption | Very Low (<5%) |
| Compression Set | Excellent (Resists permanent deformation) |
| UV & Ozone Resistance | Excellent for prolonged outdoor use |
| Flame Rating | UL94 V-0 Optional |
| Adhesive Backing | Optional (Single/Double Sided PSA) |
We manufacture silicone foam cords and seals in various standard cross-sections, as well as complex custom profiles tailored to fit specific groove designs and closure requirements:
| Profile | Recommended Use |
|---|---|
| Round Silicone Foam Cord | Ideal for O-ring alternatives and circular groove sealing. |
| Square & Rectangular Foam Strip | Perfect for gap filling, cushioning, and straight-channel door seals. |
| D-Shape Silicone Foam Seal | Offers excellent compression properties for industrial doors and hatches. |
| P-Shape Silicone Foam Seal | Commonly used in sheet metal enclosures and oven doors for flange mounting. |
| Hollow Silicone Foam Tube | Provides softer compression and greater flexibility for low-force closing mechanisms. |
| Custom Extruded Profiles | Engineered specifically for your unique assembly geometries. |
Because of its combination of thermal stability, compressibility, and environmental resistance, our silicone foam strip is a vital component across multiple heavy-duty industries:
Provides critical thermal insulation, vibration dampening, and waterproof sealing (IP67/IP68) around battery enclosures to protect sensitive lithium-ion cells. Silicone foam also delivers thermal isolation, cushioning and environmental protection for battery modules and energy storage systems, helping protect against vibration, moisture and dust in demanding operating environments.
Acts as an environmental gasket to seal out dust and moisture from outdoor communication cabinets, control panels, and LED lighting fixtures. Its thermal stability, compression recovery, vibration damping and electrical insulation help protect sensitive electronic and mechanical components during long-term operation.
Used extensively in door seals, window gaskets, and HVAC ducting to ensure cabin comfort, noise reduction, and weatherproofing. Silicone foam can reduce NVH (noise, vibration and harshness) while maintaining long-term sealing performance in vehicle and railway assemblies.
Serves as a heat-resistant door gasket for commercial bakery ovens, curing chambers, and thermal pressing machinery without degrading over time. Stable compression recovery helps maintain sealing pressure through repeated thermal cycles, while the closed-cell structure limits moisture and air leakage.
Ensures airtight and watertight seals in ventilation systems, expansion joints, and exterior building panels. Its thermal insulation and sealing performance help reduce air leakage and improve efficiency in commercial HVAC and building applications.
Silicone foam strips can be used for photovoltaic solar panel junction boxes and other outdoor renewable energy equipment, where long-term sealing must withstand severe solar UV exposure, humidity and thermal aging.
Utilized as hygienic, non-toxic seals in medical devices, sterilizers, and laboratory equipment. The flexible closed-cell structure supports clean sealing and cushioning in equipment that requires reliable environmental protection.
SENMA supports complete OEM and ODM customization to match your precise engineering specifications. We provide versatile customization services from drawings or physical samples through prototyping and production, helping maintain dimensional accuracy and consistent sealing performance.
Our customization options include:
Simply send us your CAD drawings or physical samples, and our engineering team will evaluate the requirements and provide the most suitable and cost-effective extrusion solution. We will recommend a solution within 24 hours after receiving the necessary dimensions, specifications or drawings.
Dongguan SENMA New Material Technology Co., Ltd. provides reliable industrial silicone solutions for customers worldwide. From silicone foaming to custom processing, we focus on stable quality, advanced manufacturing and professional OEM/ODM support for electronics, automotive, thermal management and industrial applications.
Our standard closed-cell silicone foam operates reliably in continuous temperatures ranging from -60°C up to +250°C, making it highly suitable for both freezing environments and high-heat industrial applications.
Yes. We can apply single-sided or double-sided adhesive tape to the flat surfaces of the profiles. Options include standard acrylic adhesive, high-temperature silicone adhesive and branded 3M adhesive tapes, helping reduce installation time during assembly.
Absolutely. If you require a unique shape such as a specific lip seal, U-channel or keyhole profile, we can design the extrusion die based on your technical drawings or physical samples and produce the exact profile you need.
Our standard colors are Red, Black, White, and Gray. We can custom-mix pigments to produce silicone foam in virtually any color to match your product design or safety coding requirements. Custom RAL and Pantone color matching is available for volume OEM orders.
Yes. For applications requiring strict fire safety protocols—such as electric vehicle batteries, aerospace or consumer electronics—we can formulate the silicone to meet UL94 V-0 flame retardant specifications upon request.
Yes. We support customized thickness, width, continuous length, density, hardness, color and adhesive backing. Custom profiles are produced according to CAD drawings, dimensional specifications or physical samples.
Standard material samples are usually available within 1-3 days. Custom samples are typically completed within 3-7 working days depending on complexity. Our engineering team can also provide material recommendations before sampling.
Our silicone foam strips are widely used in electronics, automotive, LED lighting, medical equipment, EV battery packs and energy storage systems, HVAC systems, renewable energy equipment and heavy industrial enclosures.
SENMA supplies premium silicone foam strips, cords, and custom-extruded sealing components to industrial customers worldwide.
Whether you require standard profiles in bulk or fully customized silicone sealing solutions for a specialized project, our experienced team is ready to support you with professional engineering advice, competitive pricing, and fast global delivery.
Contact us today to request a quotation or a free sample for testing.
