Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

​Evonik Ultrasil AS 7 Precipitated Silica

Evonik Ultrasil AS 7 is original German imported precipitated sodium aluminum silicate. It acts as a medium-reinforcing filler for rubber, with excellent processability, high-load filling capacity and adjustable mechanical properties for mechanical rubber goods.

Features Of Evonik Ultrasil AS 7 Precipitated Silica

  1. Excellent processability – smooth mixing, stable extrusion for all rubber molding

  2. Medium reinforcement – balanced hardness, strength and resilience

  3. High-filling compatible – high dosage without losing flow and performance

  4. Flexible performance adjustment – blendable with VN3 or inert fillers

  5. Chemically inert – good compatibility, no cure interference

Typical Applications Of Evonik Ultrasil AS 7 Precipitated Silica

  1. Mechanical rubber goods – seals, dampers, pads, supports

  2. Industrial rubber parts – rollers, hoses, belts, buffers

  3. General rubber components – cost-effective high-filled compounds

  4. Light-colored rubber products – white/color items reinforcement

  5. Extrusion/molding parts – smooth surface and stable dimension

Specifications Of Evonik Ultrasil AS 7 Precipitated Silica

Product TypePrecipitated Sodium Aluminum Silicate
AppearanceWhite powder
BET Surface Area~65 m²/g
SiO₂ Content≥98%
pH Value5.5–7.5
Loss on Drying≤7.0%
CAS No.1344-00-9
Packing25kg/barrel



Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *