Two-Component Liquid Foaming Silicone for Soft Sealing and Cushioning Solutions

Product Overview

Silicone Sponge, produced from a two-component addition curing liquid silicone, foams chemically the moment the A and B parts are blended. The result is a soft, ultra-lightweight, and environmentally safe foam material with no restriction on cast thickness and easy processing. HONG YE SILICONE, an established RTV-2 silicone rubber and liquid silicone manufacturer, supplies this Silicone Foam with dependable quality to industrial customers across the globe.

Technical Specifications

• Composition: Two-part, platinum-catalyzed addition silicone
• Mix Ratio: 1:1 (A:B by weight)
• Expansion: 2× standard; 7× maximum
• Temperature Range: -65°C to +200°C (continuous)
• Core Properties: Uniform cells, low linear shrinkage, high rebound, flame retardant
• Certifications: ISO9001, UL, CE
• Packaging: A 25/250/200 kg; B 20/25/200 kg per drum
• Storage: Sealed, cool, dry; 12-month shelf life

Product Images and Videos

[Insert: Component drums and liquid state | Foaming expansion in progress | Silicone sponge cross-section | Finished seals, mattress layers, and robot filler] [Insert video: Production demonstration from mixing through cured part testing]

Product Features and Advantages

1. Strong Expansion, Lower Cost — 2× standard and up to 7× maximum expansion means you use less silicone per part, improving cost efficiency.
2. Uniform, Stable Foaming — Consistent cell structure with low shrinkage and excellent rebound gives you repeatable part quality.
3. Soft Yet Durable — Lightweight with a pleasant elastic feel; no migration or shrinkage over its service life.
4. Safe for Sensitive Uses — Non-toxic, non-corrosive, non-radioactive, and chemically inert, making it suitable even for body silicone and contact applications.
5. Proven All-Weather Performance — Maintains flexibility from -65°C to 200°C, backed by strong heat, cold, electrical insulation, and flame resistance.
6. Production-Friendly — No thickness limits, straightforward 1:1 ratio, and easy integration with manual or automated lines.

How to Use — Step by Step

1. Pre-stir Components A and B separately to ensure an even distribution of all ingredients.
2. Weigh and blend A and B at 1:1 ratio, stirring for 2–3 minutes until fully uniform.
3. Degas the mixed material under vacuum and use it immediately to prevent premature curing.
4. Cast or inject into the mold and allow foaming and curing at room temperature or with mild heating.

Application Scenarios

• Sealing Components: Gaskets, sealing pads, foam strips, foam sheets, silicone foam tubes, and copier/printer roller sponges.
• Comfort Products: Silicone insoles, sofa cushions, mattress layers, and automotive seat and headrest padding.
• Health and Fitness: Bra inserts, shoulder pads, maternity back supports, children's pillows, and senior fitness equipment.
• Model and Filler: Core filling for silicone robots, lifecasting figures, and display models — a practical partner to Mold Making Silicone and liquid silicone systems.
• Electronic Protection: Lightweight cushioning and filling in devices where Electronic Potting Compound is also applied.

Why Buyers Benefit: Lower material spend, more consistent products, and durable sealing or cushioning performance that reinforces your brand quality.

Certifications and Compliance

Manufactured under ISO9001 quality management with UL and CE certification, this silicone foam aligns with recognized international safety and environmental standards, simplifying market entry for overseas buyers.

Customization Options

We provide adjustable hardness and expansion ratio, custom color, viscosity tuning for automated dispensing, enhanced flame-retardant grades, and food-contact or medical-grade formulations upon request.

Production Process

Raw material inspection → accurate A/B batching → vacuum compounding → laboratory tests (viscosity, expansion, hardness) → sealed packaging → final inspection before shipment. With 48 production lines and 23+ years of experience, we ensure consistent supply and quality.

FAQ

Q: What is the typical curing time? A: At room temperature, curing generally completes within a few hours depending on thickness and grade. Gentle heating can shorten the cycle for faster production.

Q: Can expansion and hardness be adjusted together? A: Yes. Our technical team can tailor the formulation to balance expansion ratio and hardness for your specific part design.

Q: Are there any substances that will ruin the product? A: Avoid contact with nitrogen, sulfur, phosphorus, tin, lead, cadmium, mercury, hexavalent chromium, PBBs, PBDEs, and water, which can inhibit platinum curing.

Q: Do you support OEM production? A: Yes. We offer OEM services and can produce custom grades, packaging, and labeling according to your specifications.

Q: What certifications support this product? A: The product line is manufactured in an ISO9001-certified plant and carries UL and CE certifications.