RTV2 Platinum Addition Cured Silicone Sponge

Our flexible liquid silicone foam is a two-component platinum addition curing RTV2 Silicone Sponge featuring customizable 2–7 times foaming expansion. It delivers delicate uniform pores, low linear shrinkage and excellent compression set resistance, maintaining stable soft elasticity within -65℃ to 200℃. Combined with our Mold Making Silicone, Pad Printing Silicone, Electronic Potting Compound, Human Body Silicone and robot skin silicone, we offer all-in-one silicone raw material solutions for global industrial manufacturers.

Liquid Silicone Foam is high-performance Addition Curing Silicone rubber requiring heat vulcanization. It consists of two flowable liquid A and B components. After precise mixing and thermal foaming reaction, it turns into ultra-light, soft and elastic silicone foam. There is no thickness limitation for finished products. The material boasts simple operation and superior long-term stability. It won’t suffer oil migration, aging shrinkage or structural fatigue, perfectly matching mass production and custom OEM projects for worldwide B2B purchasers.

This industrial-grade Foamed Silicone adopts 1:1 weight mixing ratio for A and B components. The volume expansion can be adjusted from 2X to 7X to meet diverse density requirements. The cured foam owns ultra-low linear shrinkage and outstanding compression recovery, retaining steady soft elasticity under repeated high-low temperature cycling. It is non-toxic, non-corrosive and chemically inert, equipped with reliable electrical insulation and flame retardant properties, complying with international industrial safety standards.

The controllable foaming ratio allows manufacturers to freely adjust foam density. The cured foam comes with fine, consistent pores and stable physical performance. It is lightweight and comfortable to touch, resisting permanent deformation after long-term cyclic compression. Adopting premium platinum-cured eco-friendly formula, it is safe for consumer goods contact. Strict batch-to-batch quality control ensures consistent performance, helping manufacturers cut reject rates and optimize raw material costs.

1. Stir component A and component B separately before use to eliminate sediment generated during long-term sealed storage.
2. Mix Part A and Part B strictly at 1:1 by weight, stir continuously for 2–3 minutes to achieve full homogeneity.
3. Conduct vacuum defoaming immediately after mixing, then pour or mold the mixture quickly to avoid premature curing and guarantee uniform foaming quality.

This versatile foamed silicone is widely used for manufacturing industrial sealing gaskets, sealing strips, foam sheets, silicone foam tubes and sponge rollers for copying and printing equipment. It is also suitable for automotive interior accessories, household mattresses, sofa cushions, silicone insoles, maternity back support cushions and children’s pillows. It serves as excellent filling material for human simulation silicone and robot silicone products, boosting production efficiency and reducing raw material waste.

This product satisfies international environmental and industrial safety standards. Non-toxic and chemically inert, it can be applied to both industrial parts and daily consumer products. It can be shipped as non-dangerous goods and supports smooth customs clearance for cross-border shipments.

Custom services are available for foaming multiple, foam density and surface softness. We can tailor material parameters to satisfy different production demands in automotive, electronics, consumer goods and intelligent robot industries.

Standard packaging: Part A 25KG / 200KG / 250KG per drum; Part B 20KG / 25KG / 200KG per drum. Transported as non-hazardous goods. Keep sealed and stored in cool, dry indoor space. Avoid direct sunlight, high-temperature heating, and contact with sulfur, phosphorus, heavy metals or moisture to prevent curing failure.

Q1: What will trigger uneven foaming or curing failure?

A1: Sulfur, phosphorus, heavy metals and water are curing inhibitors that interfere with platinum curing reaction. Long-term sunlight exposure and overheating will also damage pore uniformity and structural stability of foam.

Q2: Why buy liquid silicone foam directly from our factory in bulk?

A2: It has stable adjustable foaming performance, wide temperature resistance and long-lasting rebound. Consistent batch quality minimizes your production risks. One-stop purchase of full-series silicone materials simplifies your supply chain and cuts overall manufacturing costs.