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Silopren™ LSR 2749 is a 40A two-component, self-bonding liquid silicone rubber with a 40 Shore A hardness.
Silopren™ LSR 2749 is a self-bonding injection molding silicone rubber material that offers adhesion to polycarbonate (PC), polybutylene terephthalate (PBT), and copolyesters without using a primer and without adhering to the mold. Adequate bond strength is reached immediately upon demolding. This self-bonding property of Silopren™ LSR 2749 makes it a cost-effective solution for multicomponent injection molding or insert molding.
Shore A hardness: 40
Tensile strength, MPa: 7
Elongation at break, %: 600
Tear strength, die B, kN/m: 40
Primary Chemistry: Liquid silicone rubber
Primerless adhesion to PC, PBT, and copolyesters
No special mold treatment required
No adhesion to the mold
High-temperature stability
Flexibility at lower temperatures
Good dielectric and mechanical properties
Easy to pigment
Primer required for adhering liquid silicone to polycarbonate (PC), polybutylene terephthalate (PBT), and copolyester substrates
Increased cost with the use of liquid silicones in injection molding and insert molding applications
Respiratory masks
Sealing elements
Mobile phone gaskets
Membranes and diaphragms
Connectors
Handles and grips
Spatulas
Straps
Bellows
Vibration dampers
Other soft–hard combinations
Learn about Momentive range of fluorosilicone elastomers that are excellent for a wide range of industrial and transportation harsh conditions.
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