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Liquid Silicone Foam for Sealing and Insulation

Technical Parameter

Parameter Name

Typical Value

Foamed Density

0.25 - 0.60 g/cm³

Porosity / Cell Structure

> 90%

Compression Set

< 10% (22hrs @ 200°C)

Flame Resistance

UL94 V-0, HF-1

Rebound Resilience

> 50%

Operating Temperature Range

-50°C to +200°C

Thermal Conductivity

0.08 - 0.12 W/(m·K)

Hardness

10 - 30 Shore 00 (Asker C)

Tear Strength

3 - 8 kN/m

Chemical Resistance

Water-resistant, ozone-resistant, UV radiation-resistant, weak acid and alkali resistant



A high-performance, lightweight silicone elastomer featuring a controlled closed-cell foam structure, engineered by silicone foam manufacturers to deliver exceptional cushioning, thermal insulation, and environmental sealing for demanding applications requiring resilience, temperature resistance, and long-term reliability. As a leading silicone foam supplier, SENMA ensures the highest quality wholesale silicone foam products, manufactured in our silicone foam factory to meet the strictest industry standards. With wholesale silicone foam strip options available, our silicone foam supplier solutions are ideal for industries seeking high-quality materials for critical applications. Closed-cell foam for sealing and insulation with stability to 200°C, produced by a silicone foam manufacturer using liquid silicone rubber for custom wholesale supply.
  • liquid silicone foam
  • liquid silicone foam sheet
  • liquid silicone foam gasket
  • liquid silicone foam padding
  • liquid silicone foam insulation
  • liquid silicone foam seal
  • closed cell liquid silicone foam
  • UL 94 V-0 silicone foam
  • platinum cured liquid silicone foam

Description

Liquid Silicone Foam (LSF) is a versatile engineered material produced through the controlled platinum-catalyzed foaming of liquid silicone rubber. As a trusted silicone foam manufacturer, SENMA ensures this material offers extreme temperature stability, superior chemical resistance, and long-term durability, while providing a consistent, closed-cell foam architecture that enhances compressibility, thermal insulation, and environmental sealing.

It delivers exceptional performance in high-performance applications demanding lightweight design, compression set resistance, and stable performance under harsh conditions in industries such as aerospace, automotive, electronics, and medical. As one of the leading silicone foam suppliers, SENMA offers wholesale silicone foam solutions, including high-quality silicone foam products wholesaler options. Manufactured in our silicone foam factory, our products meet strict industry standards, and we also provide wholesale silicone foam strip for customized applications.

High-Performance Liquid Silicone Foam (LSF)

SENMA's Liquid Silicone Foam is an advanced engineered elastomer produced through a precision platinum-catalyzed foaming process, creating a uniform, ultra-lightweight material characterized by its consistent closed-cell structure, exceptional thermal stability, and outstanding compression recovery. As a specialized silicone foam manufacturer, SENMA employs rigorous formulation control and stringent quality management to ensure each batch meets exacting performance specifications for density, cell structure, and mechanical properties. Its exceptional resistance to extreme temperatures, environmental aging, and compression set makes this versatile foam ideal for demanding sealing, cushioning, and insulation applications across aerospace, automotive, medical, and electronics industries. As a trusted silicone foam supplier, SENMA delivers high-quality silicone foam products wholesaler solutions for high-performance applications.

Superior Sealing and Thermal Management
The homogeneous closed-cell architecture of SENMA's Liquid Silicone Foam provides exceptional barrier properties against moisture, dust, and gases while maintaining outstanding flexibility across a wide temperature range from -60°C to 200°C. This lightweight material demonstrates remarkable compression set resistance and maintains stable sealing force under prolonged stress and thermal cycling conditions. SENMA's silicone foam exhibits inherent flame retardancy (UL94 V-0 rated) and excellent resistance to UV radiation, ozone, and environmental aging, ensuring long-term performance reliability in harsh operating environments. Consequently, it is extensively specified for critical sealing applications in battery packs, electric vehicle power systems, aerospace enclosures, and industrial energy management solutions. As one of the top silicone foam manufacturers China, SENMA delivers wholesale silicone foam solutions tailored to meet the most stringent industry requirements for safety, durability, and reliability.

Customization and Performance Excellence

At SENMA, we engineer Liquid Silicone Foam (LSF) to meet your most exacting specifications. As specialized innovators in advanced silicone foaming technology, we deliver bespoke solutions with precisely tunable properties—including ultra-low density (0.25–0.9 g/cm³), adjustable hardness (Shore 00 10–80), and extreme thermal resilience (from -60°C to +250°C). Our LSF is precision-manufactured in custom thicknesses (0.5–50 mm) and cell structures to excel in mission-critical applications including EMI/RFI shielding, thermal interface management, and precision vibration dampening.

Whether supplied as rolls, die-cut gaskets, kiss-cut blanks, or complex 3D molded forms, our foamed silicone integrates seamlessly into your production process while exceeding industry standards for long-term durability, flame resistance (UL94 V-0), and environmental stability.



Product Advantages


Structural and Design Strengths of Liquid Silicone Foam

The system design of this silicone foam compound emphasizes consistent cell structure resulting in uniform compression and rebound properties. By controlling porosity and density during production, our liquid silicone foam manufacturer delivers material that integrates seamlessly with mechanical assemblies requiring exact fit and function. The expandable silicone foam formulation allows for tailored hardness and thickness variations, facilitating OEM liquid silicone foam solutions adaptable to diverse engineering challenges. Its closed-cell configuration ensures minimal moisture ingress, optimizing long-term stability within complex system architectures.


Enhanced Performance and User-Centric Value from Silicone Foam Compound

Our liquid silicone rubber foam excels in maintaining form and function under thermal cycling and mechanical stress, reducing maintenance needs and downtime. Its high rebound resilience supports cushioning applications, enhancing system protection while reducing shock transmission. The lightweight nature of the foam promotes ease of handling and reduced system weight without compromising durability. By offering custom liquid silicone foam variations, we provide end users with reliable materials that improve operational efficiency and contribute to predictable lifecycle management in advanced product designs.



Application Scenarios

Liquid Silicone Foam delivers exceptional thermal resilience, compression recovery, and chemical resistance in versatile forms, making it indispensable for cutting-edge industrial applications. In new energy vehicles, it serves as critical fire-resistant insulation in battery packs, lightweight sealing for BMS compartments, and impact-absorbing pads for electric drive systems. Electronics manufacturers leverage its stable dielectric properties and customizable conductivity for 5G EMI shielding gaskets, thermal interface pads for high-power chips, and protective cushioning in wearable devices. The aerospace and medical sectors utilize its biocompatible, ultra-clean formulations for life science instrument sealing, lightweight thermal acoustic insulation in aircraft, and sterile packaging systems requiring autoclave stability. As a leading silicone foam manufacturer, SENMA provides wholesale silicone foam solutions to meet the highest standards in these demanding applications.

As a trusted advanced material solutions provider, SENMA enables precision die-cutting, multi-layer composite laminating, and custom 3D molding to satisfy your most complex design and performance requirements across innovative applications. As one of the top silicone foam suppliers, SENMA ensures reliable, high-performance products in every industry.


Battery Pack Sealing Solutions in New Energy Industries

In the rapidly evolving battery manufacturing sector, liquid silicone foam plays a pivotal role in providing thermal stability and moisture barriers for pack housings. The foam’s flame-retardant properties comply with stringent safety standards required for energy storage devices, while its chemical resistance counteracts exposure to electrolyte leaks and environmental contaminants. This silicone foam compound supports precision sealing, ensuring reliable operational performance and reducing risk of thermal runaway incidents. Integration into battery assembly lines is facilitated by customizable thickness and density options that fit design specifications without compromising manufacturability.


Thermal Insulation and Vibration Damping in Aerospace Electronics

Aerospace enclosures subjected to wide temperature ranges benefit significantly from RTV liquid silicone foam’s high thermal resistance and cushioning capabilities. The foam’s closed-cell architecture ensures effective insulation and environmental sealing against dust and moisture ingress critical for sensitive electronic components. Its resilience to UV and ozone exposure extends service intervals in harsh flight conditions. OEM liquid silicone foam components are engineered for easy integration into aerospace subsystem assemblies, supporting vibration dampening and thermal interface requirements to maintain system integrity throughout operational cycles.




Environmental Commitment


At SENMA, sustainability guides every phase of our Liquid Silicone Foam (LSF) production. We manufacture our advanced foam materials using platinum-catalyzed, solvent-free processes that eliminate VOC emissions and incorporate recyclable silicone raw materials. Our LSF is rigorously formulated without ozone-depleting blowing agents, heavy metals, or harmful phthalates, ensuring environmental safety throughout its lifecycle. As a specialized producer of high-performance silicone foam solutions, we maintain full RoHS, REACH, and ISO 14001 compliance—validating our commitment to exceeding global environmental standards while delivering materials that support green technology innovation and circular economy principles through extended service life and recyclability. Manufactured in our silicone foam factory, SENMA's solutions help reduce environmental impact and promote sustainability.


Authentic Customer Reviews

"SENMA's LSF material exceeded our expectations for EV battery module sealing. The consistent cell structure and UL94 V-0 rating provided critical safety assurance for our premium models."
— James Müller, Senior Battery Engineer, Volkswagen AG (Germany)

"After testing 5 suppliers, only SENMA's medical-grade LSF maintained stable compression set through repeated autoclave cycles. This reliability is crucial for our surgical equipment sealing solutions."
— Dr. Emma Johnson, Medical Device Specialist, Johnson & Johnson (USA)

"For Shinkansen interior components, SENMA's LSF-35 series met both JIS E fire safety standards and comfort requirements. The material's -40°C to 200°C performance range is impressive."
— Tanaka Kenji, Materials Development Manager, Mitsubishi Electric (Japan)

"SENMA's custom EMI shielding LSF solved our 5G base station sealing challenges. The material maintains stable conductivity even after 1000 hours of humidity testing."
— Park Min-ho, RF Engineer, Samsung Electronics (Korea)

"In offshore wind turbine converters, SENMA's LSF demonstrated exceptional resistance to salt spray and UV radiation. The material showed negligible degradation after 24 months in North Sea operations."
— Pierre Dubois, Renewable Energy Engineer, Total Energies (France)




About Us

SENMA is a leading silicone foam manufacturer with over 15 years of expertise in R&D and production. We specialize in producing high-performance silicone foam sheets and rolls that meet the strict standards of industries such as automotive, electronics, and new energy. Our technical strength lies in advanced liquid silicone rubber foaming technology and a strong ability to customize density, thickness, and dimensions based on client needs. As one of the most trusted silicone foam suppliers, SENMA offers solutions that ensure reliable performance and meet the highest industry standards.

Our silicone foam factory is equipped with automated production lines and a strict quality management system that ensures consistent product performance. We follow ISO-certified procedures, implement full-process inspections, and maintain traceable quality records to guarantee every batch meets international expectations. From prototype development to bulk manufacturing, we maintain high precision and reliability. As a leading silicone foam supplier, SENMA delivers superior solutions for all industrial applications.

At SENMA, sustainability is embedded in our production approach—we use eco-conscious materials and aim for waste reduction through process optimization. Our service model emphasizes fast response, technical collaboration, and long-term customer support. With a global footprint, we serve clients in North America, Europe, and Asia, delivering not just products, but value-added solutions that enhance efficiency and reduce the total cost of ownership. As a top silicone foam manufacturer, SENMA is committed to providing products that meet your needs while supporting sustainability.

Partner with SENMA for dpendable silicone foam solutions that meet your exact specifications. Contact us today to discuss how we can support your projects with our expertise and commitment to quality.



FAQ

Q1. What material structure does this silicone foam use for sealing and insulation?
The product uses a lightweight closed-cell foam structure for sealing and insulation. We manufacture it as liquid silicone rubber-based foam material, helping support stable thermal performance in applications that require low weight and dependable compression behavior.

Q2. Can I use this material in high-temperature industrial environments?
The material offers temperature stability up to 200°C, which makes it well-suited for many heat-exposed sealing and insulation uses. In our production role as a silicone foam manufacturer, we help buyers evaluate whether this thermal range fits their operating conditions.

Q3. Do you provide custom supply options for OEM or wholesale purchasing?
Yes, we offer wholesale custom options for customers sourcing foam for production or industrial use. Our team works directly with procurement and engineering contacts that need configurable supply support from qualified silicone foam suppliers for ongoing projects.

Q4. Is this a practical alternative to teflon material in insulation applications?
Material selection depends on the thermal, sealing, and mechanical requirements of your assembly. Our silicone foam is designed for lightweight closed-cell sealing and insulation; if you are comparing it with teflon material, we recommend matching the choice to your actual service conditions.

Q5. What type of foam chemistry is used in this product?
This product is supplied as silicone-based foam rather than a generic elastomer foam. We produce it as liquid foam rubber derived from silicone chemistry, which supports stable insulation performance and custom manufacturing options for volume buyers.

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