Liquid Silicone Foam for Sealing and Cushioning

Product Overview

HONG YE SILICONE's liquid silicone Foam is an addition-curing, platinum-catalyzed two-component silicone rubber developed for controlled chemical foaming. Once Part A and Part B are mixed, the liquid Foaming Silicone Rubber cures into a soft, ultra-lightweight, eco-friendly cellular material that can be produced in virtually any thickness. As a global supplier of RTV-2 silicone rubber and liquid silicone products, HONG YE SILICONE delivers this Foamed Silicone under ISO9001-certified quality management to industrial buyers across more than 138 countries.

Technical Specifications

• Chemistry: Two-component platinum-cured addition silicone
• Mixing Ratio: 1:1 (A:B by weight)
• Foaming Ratio: 2× nominal, up to 7× maximum
• Service Temperature: -65°C to +200°C (long-term)
• Performance: Low shrinkage, high rebound, uniform cell structure, flame retardant
• Approvals: ISO9001, UL, CE
• Packaging: A: 25 / 250 / 200 kg drum; B: 20 / 25 / 200 kg drum
• Storage: Sealed, cool, dry place; 12-month shelf life

Product Images and Videos

[Insert: Part A and Part B before mixing | Foaming process in real time | Cross-section showing uniform closed cells | Finished foam strips, gaskets and cushion pads] [Insert video: Weighing → mixing → vacuum degassing → pouring → foaming → curing → final inspection]

Product Features and Advantages

• Material-Saving Expansion — Foaming to up to 7× original volume means less silicone consumed per finished part, reducing material cost.
• Repeatable, Stable Quality — Uniform cell distribution and stable foaming behavior ensure consistent softness, density, and rebound from batch to batch.
• Lasting Softness — Lightweight with a pleasant elastic hand-feel; no migration, no compression set, and no shrinkage during long-term service.
• Safe for People — Non-toxic, non-corrosive, non-radioactive, chemically inert, and odor-free — appropriate for Human Body Silicone and skin-contact uses.
• Wide-Range Reliability — Flexible and functional from -65°C to 200°C, with good heat resistance, cold resistance, electrical insulation, and flame retardancy.
• Easy Processing — Convenient 1:1 mixing, cure at room temperature or with heat, and compatible with both manual pouring and automated dispensing systems.

How to Use — Step by Step

• Fully stir Part A and Part B separately before use to re-disperse any components settled during storage.
• Mix A and B at a 1:1 weight ratio and stir for 2–3 minutes until the blend is completely uniform.
• Degas the mixed material under vacuum, then use it quickly to avoid premature gelling.
• Pour or inject into the mold; allow foaming and full curing at ambient or elevated temperature before demolding.

Application Scenarios

This liquid Silicone Foam serves diverse industries:

• Sealing Systems: O-rings, sealing pads, foam strips, foam boards, silicone foam tubing, and sponge sleeves for copier and printer rollers.
• Comfort & Household: Silicone insoles, sofa and mattress padding, automotive headrests, gear knob covers, and seat cushions.
• Apparel & Health: Bra pads, shoulder pads, senior fitness equipment (joint massagers, exercise balls), maternity back supports, and infant pillows.
• Filling Applications: Internal filling for silicone robots, lifecasting mannequins, and prosthetic devices.
• Electronics: Lightweight filler and damping material that works alongside Electronic Potting Compound assemblies.

Buyer Value: Higher expansion lowers unit cost; uniform cells improve part consistency; a wide service temperature range extends product life and reduces warranty claims.

Certifications and Compliance

Manufactured in an ISO9001-certified plant with UL and CE certification. The Addition Curing Silicone formulations comply with international environmental and safety requirements, easing customs clearance and market entry across North America, Europe, the Middle East, and Asia-Pacific.

Customization Options

Tailored grades are available: adjustable hardness and foaming ratio, custom color matching, low-viscosity versions for automated lines, enhanced flame-retardant grades, and food-contact or medical-grade variants developed for your specific application.

Production Process

Strict raw material incoming inspection → precision batching of A and B → vacuum compounding → laboratory testing (viscosity, foaming ratio, hardness) → sealed drum packaging → pre-shipment final inspection. Supported by 48 production lines and 23+ years of silicone manufacturing experience.