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Silopren™ LSR 4739
Silopren™ LSR 4739 is a 30A two-component self-bonding liquid silicone rubber that is recommended for use in healthcare and medical applications.
Fulfilled By ChemPoint
- Manufacturer: Momentive
- Product Line: Momentive Core Silicone Elastomers
- Product: Liquid Silicone Rubber
- Industries: Building & Construction | Silicones
- Authorized Countries: Canada | United States
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Overview
Silopren™ LSR 4739 is a two-component self-bonding silicone rubber material for injection molding applications. It offers primer-less adhesion to polycarbonate (PC), polybutylene terephthalate (PBT), and co-polyesters with a great bond strength that is reached immediately upon demolding.
This self-bonding property of LSR 2749 makes it a cost-effective solution for multi-component injection molding or insert molding.
Silopren™ LSR 4739 is specifically designed for use in medical applications since it is biocompatible and meets USP Class VI requirements.
Specifications
Density, g/cm³: 1.10
Hardness, Shore A: 32
Tensile strength, MPa: 7
Elongation at break, %: 650
Tear strength, die B, KN/M: 40
Primary Chemistry: Liquid silicone rubber
Features & Benefits
Primerless adhesion to PC, PBT, and co-polyesters
No special mold treatment required
No adhesion to the mold
Biocompatible
Sterilizable with ethylene oxide, steam, and gamma radiation
High-temperature stability
Flexibility at lower temperatures
Good dielectric and mechanical properties
Easy to pigment
Problems Solved
Needing a primer for the adhesion of liquid silicon to polycarbonate (PC), polybutylene terephthalate (PBT), and co-polyesters substrates
Resistance of liquid silicone rubbers to sterilization methods
Applications
Respiratory masks
Sealing elements
Membranes and diaphragms
Connectors
Surgical and dental handles and grips
Dental handles and grips
Other soft-hard combinations
Related Chemistries
Related End Markets
Silicones
Related Functions
Related Properties
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