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Medical Devices

ELASTOSIL® and SILPURAN® silicone elastomers have a unique property profile that makes them ideal for medical device applications. Three of the many good reasons for using this pure material are that it can be sterilized and offers both excellent chemical and physical resistance without the need for additional stabilizers.

Our ELASTOSIL® and SILPURAN® silicone elastomers each offer the perfect solution for the many diverse, highly sensitive requirements of medical device applications.

The following are some example applications of extrudable solid silicone rubber (HTV) grades, which are primarily used for tubing in the pharmaceuticals and medical industries:

  • Drainage, peristalsis and breathing tubes
  • Feeding tubes
  • Urinary catheters
  • Tubes for transferring liquids

Liquid and solid silicone rubber processed via injection or compression molding can be used for the following applications, among others:

  • Gaskets
  • Balloon catheters
  • Valves
  • Septa
  • Filters and membranes
  • Ventilation masks, resuscitator bags and pads
  • Instrument grips
  • Mats for sterilization trays
  • Medical products
  • Stoppers and plugs
  • Medical cables

Extrusion

Schematic diagram of an extruder fitted with crosshead die.

This continuous production process involves forcing silicone rubber through a die to shape it, after which the material is cured. The necessary pressure is usually produced by a screw conveyor, in which the material is plasticized, homogenized, compressed and deaerated. This is the process for making medical and pharmaceutical tubing, among other products.

Injection Molding

Injection molding is currently the key silicone processing method for producing large quantities of product while meeting high standards of consistent product quality. This method can be used for processing solid and liquid silicone rubber compounds to make products such as gaskets, membranes and valves. We sell liquid silicone rubber as a two-part system (A/B) in 20 kg pails and 200 kg drums. WACKER solid silicone rubber products for molding applications can be purchased as one- or two-part systems; addition- and peroxide-curing grades are available.

Mixing and metering equipment for liquid silicone rubber

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ELASTOSIL® eco – Silicone Elastomers That Conserve Resources and the Environment

Through its use of renewable raw materials, WACKER has taken an initial step toward a climate-neutral circular economy – striving as always to increase the proportion of renewables in its production and to expand its line of eco products. The mass balance approach is the tool WACKER uses to achieve this aim.

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
Appearance Hardness Shore A Tear strength Tensile strength Elongation at break Compression Set Regulation Specific Features
ELASTOSIL® eco LR 5040/20 A/B slightly bluish slightly bluish 20[1] 20[1] 33 N/mm[7] 33 N/mm[7] 7.9 N/mm²[3] 7.9 N/mm²[3] 890 %[5] 890 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® eco LR 5040/30 A/B slightly bluish slightly bluish 30[1] 30[1] 32 N/mm[7] 32 N/mm[7] 8.6 N/mm²[3] 8.6 N/mm²[3] 860 %[5] 860 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® eco LR 5040/40 A/B slightly bluish slightly bluish 40[1] 40[1] 38 N/mm[7] 38 N/mm[7] 9.0 N/mm²[3] 9.0 N/mm²[3] 580 %[5] 580 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® eco LR 5040/45 A/B slightly bluish slightly bluish 45[1] 45[1] 38 N/mm[7] 38 N/mm[7] 9.0 N/mm²[3] 9.0 N/mm²[3] 580 %[5] 580 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® eco LR 5040/50 A/B slightly bluish slightly bluish 50[1] 50[1] 54 N/mm[7] 54 N/mm[7] 9.1 N/mm²[3] 9.1 N/mm²[3] 490 %[5] 490 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® eco LR 5040/60 A/B slightly bluish slightly bluish 60[1] 60[1] 50 N/mm[7] 50 N/mm[7] 9.0 N/mm²[3] 9.0 N/mm²[3] 380 %[5] 380 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® eco LR 5040/70 A/B slightly bluish slightly bluish 70[1] 70[1] 36 N/mm[7] 36 N/mm[7] 9.5 N/mm²[3] 9.5 N/mm²[3] 370 %[5] 370 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® LR 34004/50 A/B white white 50[1] 50[1] 26 N/mm[7] 26 N/mm[7] 7.8 N/mm²[3] 7.8 N/mm²[3] 450 %[5] 450 %[5] - - - X-ray opaque, Food-contact, Reduced volatile content
ELASTOSIL® LR 5040/20 A/B slightly bluish slightly bluish 20[1] 20[1] 33 N/mm[7] 33 N/mm[7] 7.9 N/mm²[3] 7.9 N/mm²[3] 890 %[5] 890 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® LR 5040/30 A/B slightly bluish slightly bluish 30[1] 30[1] 32 N/mm[7] 32 N/mm[7] 8.6 N/mm²[3] 8.6 N/mm²[3] 860 %[5] 860 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® LR 5040/40 A/B slightly bluish slightly bluish 40[1] 40[1] 38 N/mm[7] 38 N/mm[7] 9.0 N/mm²[3] 9.0 N/mm²[3] 580 %[5] 580 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® LR 5040/45 A/B slightly bluish slightly bluish 45[1] 45[1] 41 N/mm[7] 41 N/mm[7] 9.0 N/mm²[3] 9.0 N/mm²[3] 580 %[5] 580 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® LR 5040/50 A/B slightly bluish slightly bluish 50[1] 50[1] 54 N/mm[7] 54 N/mm[7] 9.1 N/mm²[3] 9.1 N/mm²[3] 490 %[5] 490 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® LR 5040/60 A/B slightly bluish slightly bluish 60[1] 60[1] 50 N/mm[7] 50 N/mm[7] 9.0 N/mm²[3] 9.0 N/mm²[3] 380 %[5] 380 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
ELASTOSIL® LR 5040/70 A/B slightly bluish slightly bluish 70[1] 70[1] 36 N/mm[7] 36 N/mm[7] 9.5 N/mm²[3] 9.5 N/mm²[3] 370 %[5] 370 %[5] - - - Fast curing, Low volatile, Food-contact, High tear-resistant
SILPURAN® 4200 - - 35[2] 35[2] 10 N/mm[8] 10 N/mm[8] 5.5 N/mm²[4] 5.5 N/mm²[4] 300 %[6] 300 %[6] - - Food-contact -
SILPURAN® 6000/05 A/B transparent transparent 5[1] 5[1] 6 N/mm[7] 6 N/mm[7] 2.5 N/mm²[3] 2.5 N/mm²[3] 700 %[5] 700 %[5] - - - Reduced volatile content
SILPURAN® 6000/10 A/B transparent transparent 10[1] 10[1] 13 N/mm[7] 13 N/mm[7] 4.2 N/mm²[3] 4.2 N/mm²[3] 740 %[5] 740 %[5] 15 %[9] 15 %[9] - Reduced volatile content
SILPURAN® 6000/20 A/B transparent transparent 20[1] 20[1] 21 N/mm[7] 21 N/mm[7] 8.0 N/mm²[3] 8.0 N/mm²[3] 850 %[5] 850 %[5] 17 %[9] 17 %[9] - Food-contact, Reduced volatile content
SILPURAN® 6000/30 A/B transparent transparent 30[1] 30[1] 25 N/mm[7] 25 N/mm[7] 8.6 N/mm²[3] 8.6 N/mm²[3] 650 %[5] 650 %[5] 13 %[9] 13 %[9] - Food-contact, Reduced volatile content
SILPURAN® 6000/40 A/B transparent transparent 40[1] 40[1] 29 N/mm[7] 29 N/mm[7] 9.6 N/mm²[3] 9.6 N/mm²[3] 600 %[5] 600 %[5] 11 %[9] 11 %[9] - Food-contact, Reduced volatile content
SILPURAN® 6000/50 A/B transparent transparent 50[1] 50[1] 30 N/mm[7] 30 N/mm[7] 10.0 N/mm²[3] 10.0 N/mm²[3] 480 %[5] 480 %[5] 14 %[9] 14 %[9] - Food-contact, Reduced volatile content
SILPURAN® 6000/60 A/B transparent transparent 60[1] 60[1] 27 N/mm[7] 27 N/mm[7] 10.0 N/mm²[3] 10.0 N/mm²[3] 350 %[5] 350 %[5] 14 %[9] 14 %[9] - Food-contact, Reduced volatile content
SILPURAN® 6000/70 A/B transparent transparent 70[1] 70[1] 22 N/mm[7] 22 N/mm[7] 9.5 N/mm²[3] 9.5 N/mm²[3] 290 %[5] 290 %[5] 11 %[9] 11 %[9] - Food-contact, Reduced volatile content
SILPURAN® 6600/40 A/B transparent transparent 40[1] 40[1] 32 N/mm[7] 32 N/mm[7] 9.4 N/mm²[3] 9.4 N/mm²[3] 550 %[5] 550 %[5] 14 %[9] 14 %[9] - Food-contact, Low coefficient of friction, Reduced volatile content, Less self-healing
SILPURAN® 6600/50 A/B transparent transparent 50[1] 50[1] 31 N/mm[7] 31 N/mm[7] 8.9 N/mm²[3] 8.9 N/mm²[3] 440 %[5] 440 %[5] 13 %[9] 13 %[9] - Food-contact, Low coefficient of friction, Reduced volatile content, Less self-healing
SILPURAN® 6600/60 A/B transparent transparent 60[1] 60[1] 26 N/mm[7] 26 N/mm[7] 9.0 N/mm²[3] 9.0 N/mm²[3] 310 %[5] 310 %[5] 14 %[9] 14 %[9] - Food-contact, Low coefficient of friction, Reduced volatile content, Less self-healing
SILPURAN® 6610/40 A/B white white 40[1] 40[1] 22 N/mm[7] 22 N/mm[7] 7.2 N/mm²[3] 7.2 N/mm²[3] 510 %[5] 510 %[5] 12 %[9] 12 %[9] - Food-contact, Reduced volatile content, Less self-healing
SILPURAN® 6610/50 A/B white white 50[1] 50[1] 25 N/mm[7] 25 N/mm[7] 8.0 N/mm²[3] 8.0 N/mm²[3] 450 %[5] 450 %[5] 12 %[9] 12 %[9] - Food-contact, Reduced volatile content, Less self-healing
SILPURAN® 6610/60 A/B white white 60[1] 60[1] 20 N/mm[7] 20 N/mm[7] 7.0 N/mm²[3] 7.0 N/mm²[3] 300 %[5] 300 %[5] 15 %[9] 15 %[9] - Food-contact, Reduced volatile content, Less self-healing
SILPURAN® 6700/40 A/B transparent transparent 40[1] 40[1] 23 N/mm[7] 23 N/mm[7] 8.2 N/mm²[3] 8.2 N/mm²[3] 640 %[5] 640 %[5] 40 %[10] 40 %[10] - Self-adhesive, Food-contact, Reduced volatile content
SILPURAN® 6700/50 A/B transparent transparent 50[1] 50[1] 24 N/mm[7] 24 N/mm[7] 8.5 N/mm²[3] 8.5 N/mm²[3] 590 %[5] 590 %[5] 50 %[10] 50 %[10] - Self-adhesive, Food-contact, Reduced volatile content
SILPURAN® 6700/60 A/B transparent transparent 60[1] 60[1] 26 N/mm[7] 26 N/mm[7] 9.6 N/mm²[3] 9.6 N/mm²[3] 490 %[5] 490 %[5] 60 %[10] 60 %[10] - Self-adhesive, Reduced volatile content
SILPURAN® 6740/40 A/B transparent transparent 40[1] 40[1] 27 N/mm[7] 27 N/mm[7] 8.8 N/mm²[3] 8.8 N/mm²[3] 710 %[5] 710 %[5] - - - Self-adhesive, Food-contact, High tear-resistant, Reduced volatile content
SILPURAN® 6760/50 A/B transparent transparent 50[1] 50[1] 27 N/mm[7] 27 N/mm[7] 8.4 N/mm²[3] 8.4 N/mm²[3] 600 %[5] 600 %[5] - - - Self-adhesive, Food-contact, Low coefficient of friction, Reduced volatile content, Less self-healing
SILPURAN® AUX 8250 RO white white - - - - - - - - - - - Food-contact, X-ray opaque, Medical
SILPURAN® AUX 8251 RO white white - - - - - - - - - - - Food-contact, X-ray opaque, Medical
Legend
[1] Hardness Shore A | DIN ISO 48-4,  [2] Hardness Shore A | DIN 53 505 / ISO 868,  [3] Tensile strength | ISO 37 type 1,  [4] Tensile strength | DIN 53504 S1 / ISO 37,  [5] Elongation at break | ISO 37 type 1,  [6] Elongation at break | DIN 53504 S1 / ISO 37,  [7] Tear strength | ASTM D 624 B,  [8] Tear strength | ASTM D 624,  [9] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A | post-cured 6 h / 200 °C,  [10] Compression Set | 22 h | 125 °C | DIN ISO 815-1 type B method A,  [] Suited,  [] Well suited,  [] Ideally suited