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Silicone Elastomers

Silicon elastomers have a distinctive range of properties that distinguish them from other kinds of rubber. Silicone rubber is processed either as ready for use (LSR and HTV) or as solid silicone rubber to which curing agents or additives such as color may be added. The main processing techniques are extrusion, molding (injection molding, transfer), compression molding and calendering.

The most important properties of silicone elastomers compared to other kinds of rubber are:

  • Excellent resistance to high temperatures with simultaneous low-temperature flexibility
  • Extremely low compression set
  • High resistance to chemicals and environmental influences
  • Water-repellent surface
  • Very good mechanical properties over a very wide temperature range with sufficient oil resistance
  • Neutral in taste and odor
  • Biocompatibility
  • Exceptionally high purity

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Appearance Hardness Shore A Tensile strength Elongation at break Tear strength Compression Set Specific Features
ELASTOSIL® R 401/50 S transparent transparent 50[1] 50[1] 12.0 N/mm²[2] 12.0 N/mm²[2] 640 %[3] 640 %[3] 27 N/mm[4] 27 N/mm[4] 17 %[5] 17 %[5] Food-contact, General purpose
ELASTOSIL® R 401/60 S transparent transparent 60[1] 60[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 550 %[3] 550 %[3] 26 N/mm[4] 26 N/mm[4] 16 %[5] 16 %[5] Food-contact, General purpose
ELASTOSIL® R 401/70 S transparent transparent 70[1] 70[1] 11.3 N/mm²[2] 11.3 N/mm²[2] 530 %[3] 530 %[3] 31 N/mm[4] 31 N/mm[4] 22 %[5] 22 %[5] Food-contact, General purpose
ELASTOSIL® R 865/40 S translucent translucent 40[1] 40[1] 8.0 N/mm²[2] 8.0 N/mm²[2] 430 %[3] 430 %[3] 13 N/mm[4] 13 N/mm[4] 10 %[5] 10 %[5] Ultra-low compression set, High rebound resilience, Food-contact
ELASTOSIL® R 865/50 S translucent translucent 48[1] 48[1] 8.0 N/mm²[2] 8.0 N/mm²[2] 370 %[3] 370 %[3] 14 N/mm[4] 14 N/mm[4] 7 %[5] 7 %[5] Ultra-low compression set, High rebound resilience, Food-contact
ELASTOSIL® R 865/60 S translucent translucent 60[1] 60[1] 9.3 N/mm²[2] 9.3 N/mm²[2] 380 %[3] 380 %[3] 18 N/mm[4] 18 N/mm[4] 5 %[5] 5 %[5] High rebound resilience, Food-contact, Low compression set
ELASTOSIL® R 865/70 S translucent translucent 69[1] 69[1] 8.9 N/mm²[2] 8.9 N/mm²[2] 310 %[3] 310 %[3] 18 N/mm[4] 18 N/mm[4] 8 %[5] 8 %[5] Ultra-low compression set, High rebound resilience, Food-contact
ELASTOSIL® R plus 4001/50 MH transparent transparent 50[1] 50[1] 11.5 N/mm²[2] 11.5 N/mm²[2] 830 %[3] 830 %[3] 35 N/mm[4] 35 N/mm[4] 20 %[5] 20 %[5] Food-contact, One-component, Addition Curing
ELASTOSIL® R plus 4001/60 MH transparent transparent 60[1] 60[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 710 %[3] 710 %[3] 30 N/mm[4] 30 N/mm[4] 18 %[5] 18 %[5] Food-contact, One-component, Addition Curing
ELASTOSIL® R plus 4001/70 MH transparent transparent 70[1] 70[1] 10.3 N/mm²[2] 10.3 N/mm²[2] 660 %[3] 660 %[3] 38 N/mm[4] 38 N/mm[4] 30 %[5] 30 %[5] Food-contact, One-component, Addition Curing
Legend
[1] Hardness Shore A | DIN ISO 48-4,  [2] Tensile strength | ISO 37 type 1,  [3] Elongation at break | ISO 37 type 1,  [4] Tear strength | ASTM D 624 B,  [5] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A | post-cured 4 h / 200 °C,  [] Suited,  [] Well suited,  [] Ideally suited