Home / Products / Foam Silicone / Silicone Sponge

Silicone Sponge

Your Professional Silicone Sponge Supplier!

Sanpu Silicone Co., Ltd. is a leading manufacturer of silicone sheets in China. We offer all kinds categories of silicone, including: Silicone Sponge Sheets, Silicone Foam Sheet, Silicone Sponge Extrusion, Silicone Solid Sheet, Silicone Solid Extrusion, Silicone Tube.

High Tear Strength Silicone Sponge
UltraTough® High-Tear Silicone Sponge – Superior Tear & Stretch Performance/Longer Service Life/Wide Temperature Adaptability/Cost-Effective Alternative
read more
High-tear Silicone Sponge
UltraTough® High-Tear Silicone Sponge – Industrial-grade foamed silicone | Durable and tear-resistant, providing reliable protection for industrial applications
read more
Laminating Machine Mat Roll
Silicone sponge is ideal for Laminating Machine Mat Roll
Strong Chemical & Weather Resistance
High Temperature Resistance & Stability
read more
ARLON 99-1135M Alternative
High Performance Silicone Sponge at a Better Cost
Premium Replacement For Rogers ARLON 99-1135M
read more
Laminating Machine Mat Adhesive
Silicone sponge with adhesive is ideal for Laminating Machine Mat Adhesive.
read more
Silicone Sponge Alternative
We provide high-performance closed-cell silicone sponge materials that serve as a reliable silicone sponge alternative for industrial sealing, cushioning and insulation applications. For...
read more
Pressing Silicone Mat
Our Pressing Silicone Mat is a high-performance closed-cell silicone foam sheet engineered for heat press machines, thermal transfer printing, and industrial high-temperature sealing
read more
Laminating Machine Silicone Pad
Laminating Machine Silicone Pad is silicone sponge pad
Superior high temperature resistant
Extremely low permanent compression set
Advanced cutting equipment
Contact...
read more
Press Machine Silicone Pad
We offer good quality Press Machine Silicone Pads
Superior high temperature resistant
Extremely low permanent compression set
Advanced cutting equipment
read more
Silicone Sponge Roll Mat
Silicone Sponge Roll Mat High Temp Resistant Closed Cell Foam Rubber Sheet
The performance of silicone sponge roll mat is beyond ordinary performance
Strong processing and...
read more
Spongy Silicone Rubber
Spongy Silicone Rubber, also known as Silicone foam Rubber, is a high-performance porous elastic material made from silicone rubber as the base material, combined with foaming agents, catalysts...
read more
Highly Tear Resistant Silicone Sponge
Newly Developed Highly tear resistant silicone sponge— 300% Elongation, Stable after 280℃ For 72h
Highly tear resistant silicone sponge is also highly hear resistant
read more

First 12 3 4 5 6 7 Last

Why Choose Us

Patent Certificate

We have obtained ROHS certification (for closed-cell silicone foam), V-0 certification, FDA certification, ROHS certification (for open-cell silicone sponge), and REACH certification.

Wide Applications

Our products have been widely used in a variety of industries, including electronics, automotive manufacturing, medical devices, aerospace, and architectural decoration, demonstrating excellent applicability and compatibility.

Advanced Equipment

We are equipped with a comprehensive suite of advanced production equipment, including fully automated silicone compounding lines, precision injection molding equipment, high-precision extrusion systems, and advanced online testing instruments. This ensures complete automation and control of the entire process, from raw material processing to finished product formation.

Quality Control

The high-performance silicone materials we produce adhere strictly to the ISO 9001 international quality management system standards and relevant industry regulations. Every step, from raw material procurement to finished product delivery, undergoes rigorous quality control.

Specification

Properties	Values
Compound	VMQ
Density (<6.4mm thick)	690 kg/m3
Density (>6.4mm thick)	550 kg/m3
Tensile Strength	862 kPa
Elongation at Break	230%
Compression Deflection (25% compression)	41 - 96 kPa
Compression Set (22hrs @ 100°C)	5%
Brittle Point	-55°C
Maximum Temperature (constant)	+204°C
Maximum Temperature (intermittent)	+232°C

Key Properties of Silicone Sponge

Closed cell structure
Silicone sponge is an elastomeric material and is expanded at the time it is heat cured. This process results in a closed cell sponge structure, meaning each cell is a complete closed sphere, trapping air within each cell and creating a natural barrier against moisture, liquids, gases and other environmental elements.

Temperature resistance
Silicone sponge can withstand extremely high and low temperatures, operating within a temperature range between -60 degrees Celsius and 230 degrees Celsius without compromising its structural integrity or high performance.

Environmental resistance
Thanks to its closed cell structure, silicone sponge is highly resistant to moisture, radiation and ozone and UV, allowing it to perform well in even the harshest of environments.

Water resistance
The closed cell structure also means that silicone sponge is also highly water resistant. Capable of meeting ingress protection 67 (IP67), Silicone Sponge Sheeting offers water ingress protection to many critical applications in many market sectors.

Compressibility
Silicone sponge offers impressive low compression set, meaning the material will recover quickly when compressed. This is a critical aspect for design engineers when testing sealing materials. The sponge can seamlessly fill gaps and conform to irregular shapes and surfaces due to its excellent flexibility, without jeopardising its structural integrity.

Application of Silicone Sponge

Aerospace: Silicone sponges are used in the aerospace industry for applications such as gasketing, sealing, and thermal insulation.
Automotive: They are utilised in the automotive industry for gasketing, cushioning, sealing, and vibration dampening purposes.
Electronics: Silicone sponges are commonly used in electronic devices for cushioning, shock absorption, and insulation. They can protect delicate electronic components from damage and provide thermal management.
Medical: In the medical industry, silicone sponges find applications in healthcare equipment, medical devices, and prosthetics due to their biocompatibility, sterilisation resistance, and flexibility.
Industrial Manufacturing: These sheetings are employed in industrial applications such as sealing, insulation, and noise reduction in equipment, machinery, and production processes.
Food and Drink: Silicone sponges are used in the food processing industry for applications like gaskets, seals, and vibration dampening, as they are non-toxic, FDA-compliant, and resistant to extreme temperatures.
Construction: Silicone sponges are utilised in the construction industry for sealing joints, providing thermal insulation, and reducing vibration and noise in various structures or building components.
Renewable Energy: They find applications in renewable energy systems like solar panels and wind turbines for gaskets, sealing, and thermal management purposes.
Marine: Silicone sponges are used in the marine industry for sealing and gasketing applications, as they have excellent resistance to saltwater, UV rays, and extreme temperatures.
Consumer Products: They are utilised in various consumer products such as home appliances, sporting goods, footwear, and personal care items, where cushioning, insulation, or sealing properties are required.

Customized Service

1. We accept customization of various product attributes, including color, size, structure, surface finish, logo, adhesive type, and other specifications.

2. We can provide product design files in the following formats: 3D drawings in STP or IGS format, and 2D drawings in CAD or PDF format.

3. Customers can obtain a detailed quotation upon request by submitting their specific requirements.

Silicone Sponge Vs. Silicone Foam

Characteristic	Sponge	Foam
Raw Material	Gum-based silicone, mixed and cured in an oven	Liquid silicone extruded and cured in an oven
Min Max Use Temp	-73°C +260°C -100°F + 500°F	-51°C +200°C -67°F + 392°F
Flammability	UL 94 HBF (horizontal burn formula is available V22-300)	UL 94 V-0 Vertical burn - better flame rating than sponge
Compression Set	Good (a lower compression set formula is available V22-210)	Better compression set than a sponge
Tensile Strength	High tensile strength; higher material weight	Lower tensile strength than a sponge; lower material weight. Easier to tear by hand.
Density	Soft Silicone Sponge = 21-30 PCF (pound/cubic ft) typical Medium Silicone Sponge = 29-33 PCF typical Firm Silicone Sponge = 40 PCF typical	Soft Silicone Foam = 12 PCF typical(pound/cubic ft) Medium Silicone Foam = 22 PCF typical
Compression Deflection	Soft Silicone Sponge = 5-9 PSI typical Medium Silicone Sponge = 6-14 PSI typical Firm Silicone Sponge = 12-20 PSI typical	Soft Silicone Foam = 3 PSI typical Medium Silicone Foam = 9 PSI typical

Ordering Process

1. Consultation and demand analysis
2. Product selection and confirmation
3. Order placement and order review
4. Shipping and logistics tracking

Packaging and Shipping

Packaging	Wooden box, PE film
Transportation methods	Road transport, rail transport, sea transport, air transport

Our Certificate

FAQ

Q: What are silicone sponges made of?

A: Most commercially available silicone sponge products are made from gum based polydimethylsiloxane (PMDS). The silicone elastomer is expanded at the time it is heat cured; the expansion process creates the closed cell sponge structure.

Q: What is the hardness of silicone sponge?

A: Hardness: 5 degrees ShA. Silicone sponge has excellent properties of compression, especially when the insulating surface is not smooth.

Q: How to make a silicone sponge?

A: Closed cell silicone rubber sponge is created “by subjecting a silicone base to an inert gas at an elevated pressure, preferably after a pre-curing step, reducing the pressure to allow the base to expand to produce closed cell silicone foam and curing this expanded foam at an elevated temperature”.

We're professional silicone sponge manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy bulk discount silicone sponge from our factory. For price consultation, contact us.