Super-Soft Foamed Silicone Sponge

Key Features & Advantages

Feather-Light Density & Cost Saving: Density from 0.105 to 0.15 g/cm³ significantly reduces part weight and material consumption, lowering shipping and production costs for lightweight products.

Super-Soft Hand Feel: Shore C 2–18 hardness gives a gentle, skin-friendly touch that conforms softly to body curves, ideal for wearable pads, cushions and filling.

Uniform Closed Cells & Stable Shape: Fine closed cells prevent water absorption, migration and shrinkage, so parts keep their softness, shape and cleanliness over long service.

UL94 V-0 Flame Retardancy & Eco Safety: All grades meet UL94 V-0 and are non-toxic, odor-free and chemically inert, with -65℃ to 200℃ temperature tolerance for safe indoor use.

How to Use (Step-by-Step Guide)

Ratio Confirmation: Confirm the mixing ratio of Component A and Component B — 1:1 for our addition-curing ultra-light liquid silicone foam.

Mixing: Mix Component A and Component B in the exact weight or volume ratio, stir slowly and evenly for 2–3 minutes to avoid air bubbles.

Pouring or Filling: Pour the mixed foam into molds or filling cavities; vacuum de-airing is strongly recommended to control cell size and keep the ultra-light structure even.

Curing & Demolding: Cure at room temperature or with mild heat; demold gently after complete curing and trim as needed.

Application

Scenarios Filling for silicone dolls, robots and soft toys, wearable pads such as insoles, chest and shoulder pads, home and seat cushions, lightweight insulation layers, protective packaging inserts, model and prop filling and pet comfort products. This feather-light Foaming Silicone Rubber helps partners create softer, lighter and more comfortable products.

Technical Specifications

Type: Two-Component Addition-Curing Liquid Silicone Foam (ultra-light series);

Available Grades: HY-F667 (7×, 0.15 g/cm³, Shore C 2–8, 5,000–7,000 cps);

HY-F668 (8×, 0.135 g/cm³, Shore C 2–10, 3,000–5,000 cps);

HY-F669 (9×, 0.12 g/cm³, Shore C 8–18, 13,000–30,000 cps);

HY-F6610 (10×, 0.105 g/cm³, Shore C 5–15, 15,000 cps and above);

Mix Ratio: 1:1 (A:B); Curing Type: Room-Temperature/Heat Curing;

Hardness: Shore C 2–18 (customizable);

Density: 0.105–0.15 g/cm³; Linear Shrinkage: Low; Working Time: 3–5 minutes by machine (customizable);

Operating Temperature: -65℃ to 200℃; Color: Liquid translucent, cured white;

Flame Rating: UL94 V-0; Compliance: EU RoHS;

Shelf Life: 12 months (sealed storage); Non-hazardous; Customizable parameters available.

Certifications & Compliance

Our ultra-light Silicone Foam complies with international standards: ISO 9001 (strict quality control), CE Certification, EU RoHS Directive and UL94 V-0 flame rating, meeting global comfort, filling and insulation requirements, trusted by global toy, wearable, home and packaging manufacturers and procurement partners.

Customization Options

We provide series-level customization: adjust foaming ratio (7×–10×), hardness (Shore C 2–18), density, color, viscosity, operation time and curing time; optimize cell softness for comfort or filling; customize part shape, thickness and packaging, meeting both small-batch custom and large-scale production requirements.

Production Process & Quality Control

We implement a strict 5-step quality control process: raw material screening, precision automated mixing, performance testing (foaming ratio, density, hardness, softness, flame rating), curing and dimension verification, and sealed packaging. Production runs on 20 production lines with stable global supply; non-hazardous, transportable as general chemicals.

FAQ

Q: When should I choose the ultra-light series?

A: Choose 7×–10× ultra-light foam when parts need softness and minimal weight—doll and robot filling, wearable pads, comfort cushions and lightweight insulation.

Q: Will such soft foam collapse easily?

A: The closed-cell structure keeps shape and resilience; if more support is needed, choose HY-F669 (Shore C 8–18) or a lower foaming ratio.

Q: Is a higher foaming ratio always better?

A: No—higher ratio gives lighter and softer foam but less load support; select by application, not by ratio alone.

Q: Can hardness and color be customized?

A: Yes, hardness, density, color and working time can all be adjusted to your product requirements.

Q: How should the product be stored? A: Seal and store in a dry, cool place; shelf life is 12 months, shipped as non-hazardous cargo.