Your Premier Foam Silicone Manufacturer
Flexnite is a premier manufacturer and supplier of foam silicone products, known for their lightweight, flexible, and insulating properties.
Superior Foam Silicone Quality
We use high-quality silicone materials combined with specialized production techniques to produce foam silicone that offers superior flexibility, excellent thermal stability, and resistance to harsh environmental factors. Our products are ideal for applications requiring both performance and durability.
Advanced Manufacturing Technology
Our cutting-edge manufacturing facility utilizes innovative foam-molding technologies to create precise, lightweight foam silicone products. This allows us to deliver customized solutions with high consistency, reducing material waste and improving overall efficiency.
Tailored Solutions for Diverse Applications
Foam silicone's versatility makes it suitable for a wide range of applications. From automotive gaskets and seals to medical cushioning and electronics insulation, we work closely with our clients to develop tailored solutions that meet specific functional and performance requirements.
Professional R&D Team
Our in-house research and development team is constantly exploring new formulations and manufacturing methods to improve the quality and performance of foam silicone. We stay ahead of industry trends, ensuring that our products meet evolving market demands.
One-stop Manufacturing Solution
From initial design and prototyping to full-scale production and packaging, we offer a complete one-stop solution for foam silicone products. Our integrated approach ensures smooth project management and faster time-to-market for our clients.
Global Delivery Network
With our extensive international shipping capabilities, we can deliver foam silicone products quickly and securely to customers worldwide. No matter where you are located, Flexnite ensures that your orders are processed and shipped efficiently.
Introduction to Foam Silicone
Foam silicone, also known as silicone sponge or expanded silicone, is a lightweight, flexible, and high-performance elastomeric material designed for superior sealing, cushioning, and insulation across industrial applications. It is produced by introducing gas or chemical blowing agents into solid silicone rubber during the curing process, forming a microcellular closed or semi-closed structure that offers excellent compression recovery, weather resistance, and thermal stability.
Unlike solid silicone rubber, foam silicone combines softness, low density, and elasticity, making it ideal for applications requiring vibration damping, thermal insulation, or environmental sealing. The unique cellular structure allows it to deform under low pressure while maintaining excellent rebound resilience and long-term sealing performance.
At Jinjiang Yunli Technology Co., Ltd., we specialize in Silicone Sponge Sheets, Silicone Sponge Extrusions, and Silicone Foam Rolls, produced under ISO 9001-certified systems to meet stringent ASTM and UL standards. Our materials are RoHS, REACH, and FDA compliant, suitable for demanding environments in automotive, electronics, HVAC, and medical industries.
Why Choose Jinjiang Yunli Technology Co., Ltd.
Over 15 years of silicone rubber manufacturing experience
ISO 9001-certified quality management system
Advanced extrusion, molding, and foaming equipment
Strong R&D capability for customized formulations
Global export to Europe, North America, and Asia
Responsive technical support and OEM services
Key Features and Advantages of Foam Silicone
We offer a variety of transmission components
Lightweight and Compressible
The microcellular structure provides exceptional cushioning performance with low compression force, ideal for tight sealing under minimal clamping pressure.
Excellent Temperature Resistance
With continuous operating temperatures from -60°C to +230°C, foam silicone maintains flexibility, resilience, and dimensional stability in both arctic and high-heat environments.
Superior Weather and UV Resistance
Foam silicone resists ozone, sunlight, and moisture degradation far better than organic elastomers such as EPDM or neoprene, ensuring long outdoor life.
We offer a variety of transmission components, including sprockets, roller chains, gears, couplings, racks, hubs, pulleys, taper sleeves, bearing seats, and more.
Our Certificate
Certifications:
ISO 9001:2015
RoHS / REACH Compliant
UL 94 V-0 Available
FDA 21 CFR 177.2600 for food-grade
Manufacturing
Jinjiang Yunli Technology Co., Ltd. operates precision extrusion and molding lines with tight process control to ensure uniform cell structure and consistent quality.
Capabilities Include:
Continuous extrusion (profiles, tubes, strips)
Compression molding (custom gaskets, pads)
CNC die-cutting and lamination
PSA adhesive lamination
Slitting, sheeting, and fabrication
Applications of Foam Silicone
Automotive and Transportation
Door, hood, and trunk seals
LED headlamp gaskets and vibration dampers
Air conditioning and ventilation insulation
EV battery pack sealing (thermal protection)
Anti-rattle and shock absorption pads
Electronics and Electrical Equipment
Enclosure gaskets and EMI shielding interfaces
LED light strip housings and lens seals
Power inverter insulation and vibration isolation
Battery modules and energy storage systems
HVAC and Construction
Door and window weather seals
Air handling and ducting gaskets
Soundproofing and anti-condensation pads
Fire-resistant and energy-saving sealing components
Material Composition and Technical Standards
Foam silicone is formulated using high-purity silicone polymers blended with blowing agents, reinforcing fillers, and curing catalysts. The controlled foaming process produces uniform cell size distribution and consistent density throughout the product.
| Property | Typical Range | Test Standard |
|---|---|---|
| Density | 0.15 – 0.80 g/cm³ | ASTM D3574 |
| Hardness (Shore 00 / Shore A) | 20 – 60 (Shore 00), 10 – 35 (Shore A) | ASTM D2240 |
| Tensile Strength | 0.6 – 2.5 MPa | ASTM D412 |
| Elongation at Break | 100 – 300% | ASTM D412 |
| Compression Set (22h @ 100°C) | ≤10% | ASTM D395 |
| Operating Temperature | -60°C to +230°C (intermittent 250°C) | ASTM D573 |
| Thermal Conductivity | 0.2 – 0.3 W/m·K | ASTM E1530 |
| Flammability | UL 94 V-0 / V-1 (optional) | UL 94 |
| Dielectric Strength | 18 – 25 kV/mm | ASTM D149 |
| Water Absorption | <1% | ASTM D471 |
All materials can be formulated to meet ASTM D1056 (cellular rubber classification), ASTM D2000 (rubber product classification), and ISO 3302-1 (dimensional tolerances).
For food-grade or medical-grade requirements, formulations can comply with FDA 21 CFR 177.2600 and ISO 10993 for biocompatibility.
Types of Foam Silicone We Offer
Silicone Sponge
Produced in roll or sheet form, silicone sponge sheets offer uniform density and smooth surfaces. They are ideal for die-cut gaskets, thermal barriers, vibration pads, and electronic sealing components.
Silicone Sponge Extrusion
We extrude silicone sponge profiles in a wide range of shapes: round, D-shape, P-shape, E-shape, rectangular, hollow, and custom profiles.
Silicone Foam
Silicone foam differs from silicone sponge by having softer, more open cells, providing lower density and higher air permeability. It is suitable for thermal insulation, cushioning pads, and lightweight seals in electronic or aerospace applications.
FAQ
Q1: What is the difference between silicone sponge and silicone foam?
Silicone sponge has a closed or semi-closed cell structure, providing low water absorption and higher compression strength. Silicone foam has more open cells, making it softer, lighter, and more breathable.
Q2: Is foam silicone waterproof?
Closed-cell grades offer excellent water resistance, ideal for outdoor and marine sealing applications.
Q3: Can foam silicone withstand high heat?
Yes. It operates continuously at 230°C and intermittently up to 250°C without degradation.
Q4: What colors are available?
Standard colors include white, black, red, grey, and blue. Custom colors can be produced upon request.
Q5: Do you offer adhesive backing?
Yes. We offer pressure-sensitive adhesive (PSA) backing for easy installation.
Q6: Are your materials certified?
All materials comply with ISO, ASTM, RoHS, and REACH standards, with optional FDA and UL certifications.
Q7: Can you produce customized extrusions based on drawings?
Yes. We support OEM and ODM services based on CAD drawings or physical samples.
Q8: What is the typical lead time?
Standard production lead time is 7–15 days depending on order quantity and tooling requirements.
We're professional foam silicone manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to buy high-grade foam silicone from our factory.