Polymer Systems
Technology Limited

Life Science

Premium Care:


Liquid Silicone Rubbers

Liquid Silicone Rubber

  • Two-part, translucent silicone system used with injection molding equipment
  • Cures with heat via addition-cure chemistry
  • 1:1 Mix Ratio (Part A: Part B)
  • For the injection molding of parts requiring a material with a high durometer including: molded rubber stoppers, gaskets, seals, valves, o-rings and other precision parts
  • Suitable for over-molding applications
  • Can be used with NuSil's Healthcare color masterbatches for applications requiring colored silicones
Typical PropertiesAverage Result
Extrusion Rate†, Part A32 g/min
Extrusion Rate†, Part B50 g/min
Work Time>72 hours
Cured: 5 minutes at 165°C (329°F)
Specific Gravity1.22
Durometer, Type A 70
Tensile Strength1,325 psi (9.1 MPa)
Tear Strength240 ppi (42.3 kN/m)
Stress at 200% Strain825 psi (5.7 MPa)
Tissue Culture (Cytotoxicity Testing)Pass
Elemental Analysis of Trace MetalsPass

These properties tested on a lot-to-lot basis. Please contact NuSil Technology for assistance and recommendations in establishing particular specifications.

†(Performed using a SEMCO® model 250-A pneumatic gun with a ⅛ nozzle orifice and 90± 5 psi air pressure)

Recommended Primer MED1-161

Note: Some bonding applications may require the use of a primer.


200 ml Side-by-Side Kit
400 ml Side-by-Side Kit
12 Ounce Kit (354 mL)
24 Ounce Kit (710 mL)
40 Ounce Kit (1.18 L)
2 Pint Kit (910 g)
2 Gallon Kit (7.28 kg)
4 Gallon Kit (14.56 kg)
10 Gallon Kit (36.4 kg)
2 Drum Kit (360 kg)


12 Months

Product Profile - Full Details Product Profile
Safety Data Sheet Material Safety Data Sheet
Example LSR Packaging
Example LSR Packaging


The warranty period provided by Polymer systems Technology ltd (hereinafter “PST”) is from the date of shipment when stored below 40°C in original unopened containers. Unless PST provides a specific written warranty of fitness for a particular use, PST’s sole warranty is that the product will meet PST’s then current specification. PST specifically disclaims all other expressed or implied warranties, including, but not limited to, warranties of merchantability and fitness for use. The exclusive remedy and PST’s sole liability for Packaging Warranty 50 mL Side-by-Side Kit 200 mL Side-by-Side Kit 400 ml Side-by-Side Kit 2 Pint Kit (910 g) 2 Gallon Kit (7.28 kg) 10 Gallon Kit (36.4 kg), Inc. All rights reserved. Trademarks are owned by PST or its affiliates unless otherwise noted. breach of warranty is limited to refund of purchase price or replacement of any product shown to be other than as warranted. PST expressly disclaims any liability for incidental or consequential damages.



PST believes, to the best of its knowledge, that the information and data contained herein are accurate and reliable. The user is responsible to determine the material’s suitability and safety of use. NuSil Technology cannot know each application’s specific requirements and hereby notifies the user that it has not tested or determined this material’s suitability or safety for use in any application. The user is responsible to adequately test and determine the safety and suitability for their application and NuSil Technology makes no warranty concerning fitness for any use or purpose. PST has completed no testing to establish safety of use in any medical application. PST has tested this material only to determine if the product meets the applicable specifications. (Please contact PST for assistance and recommendations when establishing specifications.) When considering the use of PST products in a particular application, review the latest Material Safety Data Sheet and contact PST with any questions about product safety information. Do not use any chemical in a food, drug, cosmetic, or medical application or process until having determined the safety and legality of the use. The user is responsible to meet the requirements of the U.S. Food and Drug Administration (FDA) and any other regulatory agencies. Before handling any other materials mentioned in the text, the user is advised to obtain available product safety information and take the necessary steps to ensure safety of use.



PST disclaims any expressed or implied warranty against the infringement of any domestic or international patent/intellectual property right. PST does not warrant the use or sale of the products described herein will not infringe the claims of any domestic or international patent/intellectual property right covering the product itself, its use in combination with other products, or its use in the operation of any process.

For Use With Liquid Silicone Rubbers:



Marking Inks


Dispensing Guns

Dispensing Guns
Dispensing Guns

Mixing Equipment

Silicone Mixing Dispensing Degassing Equipment
Mixing and Dispensing