Standard Fumed Silicone Rubber for Molding

Standard Fumed Silicone Rubber for Molding


●They are applicable to the molding process and can be used to manufacture silicone rubber products with high requirements for transparency.

●Vulcanization condition: 175℃* 5Min.

●Post-curing condition:200℃* 4h

● Physical data in the above table is for reference only.

●Ratio of curing agent liquid 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane: 0.65%.

● The Quality Inspection Department obtains the supplied test report with the curing conditions and testing method of the company; due to the difference in curing conditions and testing method, we can’t guarantee that both parties obtain the same testing result, and we suggest that users should use the test data obtained under their own testing conditions as the reference for service performance. All the above performance data and application recommendations are only a reference for use on the service performance of the product, instead of a guarantee of the effectiveness or general applicability of our products under a particular application.


PropertiesProduct DataTest Method
AppearanceTransparent,no extraneous matter.Visual Inspection
Density,  g/cm31.06~1.101.09~1.151.12~1.181.14~1.201.17~1.231.18~1.251.19~1.26ASTM D792
CuringHardness,  ShoreA30±240±250±260±270±280±286±2ASTM D2240
Tensile Strength, MPa ≥ D412 
Elongation at Break, % ≥700600500400300200120 
Tension Set,  % ≤86 
Tear Strength, Die C kN/m  ≥1520252010ASTM D624
Post-curingHardness,  Shore A32±243±256±266±274±284±2/ASTM D2240
Tensile Strength, MPa ≥ D412
Elongation at Break, % ≥650550450400300180/ 
Tear Strength, Die C kN/m   ≥10182018/ASTM D624
Compression Set,180℃*22h ≤554550454035ASTM D395
Rebound Resilience, %  ≥506050454035/
Volume Resistivity, Ω ▪cm  ≥1×1015IEC 60093
Dielectric Strength, kV/mm  ≥20IEC 60243
First-order linear shrinkage, %3.1~3.73.0~3.62.9~3.42.8~3.32.6~3.22.4~3.02.4~3.0/