ELASTOSIL® LR 3003/40 A/B

Liquid Silicone Rubber (LSR)

Liquid silicone rubbers of the ELASTOSIL® LR 3003 series are paste-like, easily-pigmentable two-component compounds
with short curing times. Their vulcanizates are noted for their high transparency and excellent mechanical and electrical
properties.

Properties

Narrow Shore hardness range from 38 to 44 Shore A (41 ± 3 Shore A).
This product can be used within a temperature range of – 55 °C to + 210 °C. The addition of heat stabilizers at service
temperatures of more than 180 °C is recommended. Further information to improve the heat stability by use of specific
ELASTOSIL® Color Pastes FL can be obtained from the Technical Information Sheet “ELASTOSIL® Color Pastes FL”.

Specific features
 • Food-contact
• General purpose
• Reduced volatile content

Technical data

 Applications

• Baby Care
• Battery
• Cable Accessories
• Connector Seals
• Dairy Applications
• General Automotive Parts
• Household Applications
• Molded Parts
• Molded Seals (LSR)
• Sanitary
• Vibration Dampers

Application details

These grades are particularly suitable for the economical production of large series of injection-moulded articles. Parts
made from ELASTOSIL® LR 3003/40 A/B can be used for technical applications. These articles are also suitable for use in
conjunction with foodstuffs.

Postcured parts can be used for food contact applications and are suitable for use under the Recommendation “XV.
Silicones” of the BfR and FDA § 177.2600 under observance of any given limitations on extractable and volatile
substances.

Processing

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”. 

Packaging and storage

Packaging
This product is available in 20 kg pail and 200 kg drum kits.

Storage
Once opened, containers should always be resealed after use to prevent the platinum catalyst from being poisoned by
amines, sulphur or phosphorus compounds. 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.

Safety notes

Comprehensive instructions are given in the corresponding Material Safety Data Sheets. They are available on request from
WACKER subsidiaries or may be printed via WACKER web site http://www.wacker.com.