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New Self-adhesive LSR with Low-friction Surface from WACKER at COMPAMED

Published on 2016-11-18. Author : SpecialChem

Self-adhesive SILPURAN® 6760/50 LSR was Specifically Developed for Medical Technology and Pharmaceutical Applications
Self-adhesive SILPURAN® 6760/50 LSR
was Specifically Developed for Medical
Technology/Pharmaceutical Applications
MUNICH -- At this year’s COMPAMED medical-technology trade fair [November 14 to 17, in Düsseldorf, Germany], WACKER, the Munich-based chemical group, has showcased a new self-adhesive liquid silicone rubber (LSR) that has a low coefficient of friction.


  • SILPURAN® 6760/50 cures to form an elastomer with a lowfriction surface, a property which enables self-adhesive LSRs to be used in novel applications. 
  • The silicone adheres readily to selected polyesters such as polybutylene terephthalate (PBT). 
  • SILPURAN® 6760/50 has been designed for injection molding, making hard/soft components for medical and pharmaceutical applications suitable for cost-effective large-scale production. 

LSR with Low Coefficient of Friction

  • SILPURAN® 6760/50 is an addition-curing silicone rubber. 
  • It has two components and, once mixed, cures to form a transparent, mechanically robust elastomer with a 50 Shore A hardness. 
  • After postcuring, the vulcanizate has a coefficient of friction which is between 50 and 70 percent lower than that of standard LSRs of comparable hardness. 
  • This makes it possible to use liquid silicone rubber in movable-seal applications. 
  • The low coefficient of friction also facilitates the fitting of silicone components into medical devices.

Applications of Self-adhesive LSR

  • SILPURAN® 6760/50 was specifically designed for the production of parts comprising hard/soft combinations such as those used in the pharmaceutical and medical sectors. 
  • They are often made from a hard thermoplastic, which determines the shape, encased in a soft plastic layer. 
  • SILPURAN® 6760/50 can be used to cost-effectively injection mold these kinds of parts in large series.

ELASTOSIL® LR 6760/50 is a Self-adhesive Liquid Silicone Rubber (LSR) Which has a Low-friction Surface After Curing
ELASTOSIL® LR 6760/50 is a Self-adhesive Liquid Silicone Rubber (LSR) Which has a Low-friction Surface After Curing

Self-adhesive LSR

  • As a self-adhesive grade, SILPURAN® 6760/50 does not need any adhesion promoter. 
  • It adheres readily to selected polyesters, such as polybutylene terephthalate (PBT), a thermoplastic often used in injection molding.

Food Contact & Healthcare Application Compliant

SILPURAN® 6760/50 meets selected test requirements of ISO 10993 and United States Pharmacopeia (USP) Class VI. Postcured parts are suitable for food-contact applications and can be used under the recommendations of the German Federal Institute for Risk Assessment (BfR) and the US Food and Drug Administration (FDA).

The manufacturing process for all SILPURAN® silicone products entails ultrafine filtration, visual inspection and cleanroom packaging in antistatic materials. This ensures that SILPURAN® meets the special purity requirements of the food and medical-technology sectors.


WACKER is a globally active chemical company with some 17,000 employees and annual sales of around €5.3 billion (2015). WACKER has a global network of 25 production sites, 22 technical competence centers and 50 sales offices.

WACKER Silicones
Silicone fluids, emulsions, rubber and resins; silanes; pyrogenic silicas; thermoplastic silicone elastomers.

WACKER Polymers
Polyvinyl acetates and vinyl acetate copolymers in the form of dispersible polymer powders, dispersions, solid resins and solutions.

WACKER Biosolutions
Biotech products such as cyclodextrins, cysteine and biologics, as well as fine chemicals and PVAc solid resins.

WACKER Polysilicon
Polysilicon for the semiconductor and photovoltaic industries.

Hyperpure silicon wafers and monocrystals for semiconductor components.

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Source: WACKER
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