ELASTOSIL® LR 34004/50 A/B
ELASTOSIL® LR 34004/50 A/B is a paste-like, white two-component liquid silicone rubber with a very short curing time. Vulcaniates are noted for their radio-opaqueness.
ELASTOSIL® LR 34004/50 A/B contains barium sulfate as a radio-opaque additive which meets the requirements of the US and European Pharmacopoeia.
Specific features of ELASTOSIL® LR 34004/50 A/B
- Reduced volatile content
- X-ray opaque
ELASTOSIL® LR 34004/50 A/B is particularly suitable for the economical production of large series of injection-moulded articles. ELASTOSIL® LR 34004/50 A/B is designed for medical and pharmaceutical applications.
Properly cured and post-cured vulcanizates of ELASTOSIL® LR 34004/50 A/B can be used for food contact applications and are suitable for use under the Recommendation "XV. Silicones" of the BfR and FDA 21 CFR §177.2600 "Rubber Articles Intended for Repeated Use" considering any given limitations on extractable and volatile substances.
The following studies were performed on vulcanizates of ELASTOSIL® LR 34004/50 A/B according to ISO 10993:
- Cytotoxicity (ISO 10993-5)
- Sensitation LLNA (ISO 10993-10)
- Pyrogenicity (ISO 10993-11)
The following studies were performed on vulcanizates of ELASTOSIL® LR 34004/50 A/B according to USP class VI:
- Acute systemic toxicity
- Intracutaneous toxicity
- Implantation test
No adverse effects have been detected at any of the studies performed.
The A and B components are delivered ready to use in 20 kg pail and 200 kg drum kits. With adequate metering equipment, they can be pumped directly from the original containers into the injection molding machine and mixed by a static mixer. The mixing ratio is 1 : 1. At room temperature, mixtures of A and B components have a pot life of at least three days.
For detailed information refer to our brochure "SOLID AND LIQUID SILICONE RUBBER - MATERIAL AND PROCESSING GUIDELINES".
This product is available in 20 kg pail and 200 kg drum kits.
Once opened, containers should always be resealed after use to prevent the platinum catalyst from being poisoned by amines, sulphur or phosphorus compounds. For detailed information about storage conditions please refer to the latest edition of our brochure "SOLID AND LIQUID SILICONE RUBBER - MATERIAL AND PROCESSING GUIDELINES".
The 'Best use before end' date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.