F663 High-Expansion Liquid Foam Silicone for Seals

Product Overview

Silicone Foam Rubber is a two-component addition-curing liquid silicone that foams chemically when A and B parts are mixed. It cures into a soft, lightweight, eco-friendly foam with no thickness limits and simple handling. HONG YE SILICONE, an experienced RTV-2 silicone rubber and liquid silicone manufacturer, supplies consistent quality to buyers in 138+ countries.

Technical Specifications

• Type: Two-part, platinum-cured addition silicone
• Mix Ratio: 1:1 by weight
• Expansion: 2× standard, up to 7×
• Temperature: -65°C to +200°C
• Key Traits: Uniform cells, low shrinkage, high rebound, flame retardant
• Certifications: ISO9001, UL, CE
• Packaging: A 25/250/200 kg; B 20/25/200 kg per drum

Product Images and Videos

[Insert: A/B components | Foaming demo | Foam cross-section | Finished seals, cushions, lifecasting filler] [Insert video: Mixing → degassing → foaming → cured part test]

Product Features

1. High Expansion — Up to 7× volume, lowering material cost per part.
2. Uniform Foam — Stable cells, low shrinkage, reliable rebound.
3. Soft & Light — No migration or shrinkage in service.
4. Safe & Inert — Non-toxic, suits body silicone and skin-contact uses.
5. Wide Temperature — Flexible from -65°C to 200°C.
6. Easy Processing — 1:1 ratio, no thickness limits, automated-line friendly.

How to Use

1. Stir A and B separately.
2. Mix at 1:1 ratio for 2–3 minutes.
3. Degas under vacuum, use promptly.
4. Pour into mold; cure at room temperature or gentle heat.

Applications

Seals and gaskets, automotive cushions, insoles and mattress pads, bra inserts and maternity supports, robot and lifecasting filler — complementing Mold Making Silicone and Electronic Potting Compound systems.

Buyer Value: Lower cost, consistent quality, longer product life.

Certifications

ISO9001-certified plant; UL and CE certified for easier global market entry.

Customization

Adjustable hardness and expansion, custom colors, flame-retardant, food-grade and medical-grade grades available.

Production Process

Material inspection → precision batching → vacuum compounding → lab testing → sealed packaging → final inspection. 48 production lines, 23+ years of expertise.

FAQ

Q: Samples before bulk order?

A: Yes — pre-production samples always provided, final inspection before shipment.

Q: Pot life?

A: 20–60 minutes at room temperature; degas and dispense promptly.

Q: Food-grade version?

A: Yes, on request with your compliance requirement specified.

Q: Curing inhibitors?

A: Avoid sulfur, nitrogen, phosphorus, tin, lead, water, which can poison platinum curing.

Q: Thickness limits?

A: None — thin gaskets to thick cushions, same foam quality.