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Liveo™ Class VI Elastomers C6-150 Parts A & B

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Liveo™ Class VI Elastomers (C6-135, C6-150, C6-165, C6-180) Parts A & B are a series of two-part platinum-catalyzed silicone elastomers.
Polymer Name: Silicone Elastomer
Processing Methods: Extrusion
End Uses: Body Implants, Medical/Healthcare Applications, Medical Devices
Features: Cost Effective, Autoclaved, Heat Stabilized, Platinum Catalyzed, High Gas Permeability, Non-tacky surface, Can be post cured, Pigmentable, Low Emissions, Lot-to-lot consistency, Non Blooming
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Identification & Functionality

Liveo™ Class VI Elastomers C6-150 Parts A & B Features & Benefits

Product Background

Each elastomer is supplied as a two-part kit (Part A & Part B), equal portions of which must be thoroughly blended together prior to use. The elastomer is thermally cured via an addition-cure (platinum-catalyzed) reaction. When blended and cured as indicated, the resulting elastomer consists of crosslinked dimethyl and methyl-vinyl siloxane copolymers and reinforcing silica.The elastomers are available in a range of nominal hardness from 35 to 80, durometer, Shore A. The elastomers can normally be used without any post-cure, although if necessary, this may be employed to stabilize final properties. Furthermore, the elastomers are heat stable up to 204°C, can be autoclaved, and exhibit high gas permeability compared with most thermoset elastomers and thermoplastics.

Features & Benefits


  • Contains no peroxides, peroxide by-products, chlorophenyls or PCBs
  • Contains no organic plasticizers, phthalates or latex additives
  • Non-tacky surface
  • Non-blooming
  • Can be post-cured
  • Pigmentable


  • Qualified to meet or exceed the test requirements of:
    • United States Pharmacopeia (USP) Class VI
    • European Pharmacopoeia (Ph. Eur. or EP ) silicone elastomers for closures and tubing-"Substances soluble in hexane" and "Volatile matter"
    • ISO 10993-1 Surface Devices: cytotoxicity, sensitization and irritation/intracutaneous reactivity
  • Lot-to-lot consistency
  • Cost-effective

Applications & Uses

Recommended Uses & Known Application

Liveo™ Class VI Elastomers (C6-135, C6-150, C6-165, C6-180) Parts A & B are platinum-catalyzed heat-cured silicone High Consistency Rubbers for part fabrication, extrusion and medical devices, including those intended for implantation in humans for up to 29 days.

Processing Notes


The elastomer is supplied as two- component kit (Parts A and B) that must be thoroughly mixed in equal portions, by weight, prior to use. Typically, a two-roll mill is used for the blending process. If stored in a cold environment, warming to room temperature before unwrapping can help avoid condensation on the elastomer, which may cause voids in molded or extruded parts.

When using a two-roll mill, it is recommended to first soften the required amount of Part B while the mill is cool. Remove this from the mill and then soften the same amount, by weight, of Part A. When the Part A is sufficiently pliant, the Part B can be returned to the mill and the two Parts thoroughly cross-blended together. Blend only the amount that will be used in 3 to 4 hours. If carefully wrapped, blended material may be stored in a freezer (<0°C) for at least 7 days. Material stored in this manner should be warmed to room temperature before unwrapping to avoid condensation on the elastomer. Condensation may cause voids in molded or extruded parts.

CAUTION: The temperature of the blended material should be kept as low as possible to give maximum table life or working time.

Cure of the blended elastomer is accelerated by heat. The elastomer will cure in a mold cross-section up to 1.9mm thick in approximately 10 minutes at 116°C. Proportionally more time is required to cure thicker cross-sections.

CAUTION: The cure may be inhibited by traces of amines, sulfur, nitrogen oxide, organotin compounds and carbon monoxide. Because organic rubbers often contain these substances, they should not come in contact with the uncured elastomer. Catalyst residues from some room temperature vulcanized and peroxide-cured silicone elastomers may also inhibit the cure. All equipment should be thoroughly cleaned at the end of each use to avoid a build-up of cured stock, which is very difficult to remove. The residue may result in crumbs of elastomer being picked up by the next lot, causing imperfections.

These materials crosslink via an addition-cure (platinum-catalyzed) reaction. No organic residues such as peroxides or their by-products are present and post-cure is not normally required for most applications. The user must confirm that molding conditions or short oven cures are suitable for any specific application. The principal volatile components evolved during post-curing are low molecular weight polydimethylsiloxanes and water vapor. 


Physical Properties
ValueUnitsTest Method / Conditions
Moulding Shrinkage (Parallel)2.8%ISO 294-4, 2577
t'90 (Moving Die Rheometer at 116°C)0.8minISO 6502
Mechanical Properties
ValueUnitsTest Method / Conditions
Elongation at Breakmin. 300%ASTM D 412
Modulus at 200% Strain2.7MPaASTM D 412
Shore A Hardness59.0-ASTM D 2240
Hardness59Shore AASTM D 2240
Tear Strength (die B)44.0kN/mASTM D 624
Tensile Strength9.5MPaASTM D 412
Typical Properties
ValueUnitsTest Method / Conditions
Maximum Service Temperature205.0°C-
Cured Properties
ValueUnitsTest Method / Conditions
Post Cure Temperature177.0°C-
Post Cure Time2.0h-

Regulatory & Compliance

Quality Information

The FDA registered and ISO 9001:2015 certified Healthcare Industries Materials Site (HIMS site) is responsible for ensuring consistent product quality.

Packaging & Availability

Packaging Type
Packaging Information

Liveo™ Class VI Elastomers (C6-135, C6-150, C6-165, C6-180) Parts A & B are supplied in 13.6 and 408 kg kits, containing equal portions each of Parts A & B. Each component is sealed in a polyethylene bundle.

Storage & Handling

Shelf Life
12 months

Most Viewed Documents

Document Name
Liveo™ Class VI Elastomers C6-150 Parts A & B Technical Data Sheet
Technical Data Sheet
Liveo™ Class VI Elastomers C6-150 Parts A & B
Technical Data Sheet
Products: Liveo™ Class VI Elastomers C6-150 Parts A & B