Silopren™ LSR 2740 is a 40A two-component self-bonding liquid silicone rubber that requires primer-less adhesion and high-temperature stability for many end-use
Silopren™ LSR 2740 is a general-purpose self-bonding injection molding silicone rubber grade that offers adhesion to various metals and engineered plastics without using a primer and adhesion with the mold. Adequate bond strength is reached after a short post-cure or by longer storage at room temperature. The self-bonding property of two-component Silopren™ LSR 2740 makes it a cost-effective solution for multi-component injection molding or insert molding.
Density: 1.12 g/cm³
Hardness/Durometer, Shore A: 40
Tensile strength, N/mm²: 9.5
Elongation at break, %: 700
Tear strength, N/mm: 15
Compression set (22 h at 120°C), %: 25
Primary Chemistry: Liquid silicone rubber
Primer-less adhesion to many substrates, such as stainless steel, aluminum, nylon, and co-polyesters
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 with color pastes
Requiring a primer for the adhesion of liquid silicone to metals and difficult substrates
Liquid silicone residuals on the mold after processing
Flexibility and pigmentation issues in liquid silicone resins, especially at low temperatures
Overmolding
Sealing elements
Automotive connectors
Membranes
Vibration dampening elements
Machinery
Consumer goods
Momentive Liquid Silicone Rubber (LSR) is a versatile class of elastomers that can be molded and cured quickly even at a higher temperature range.
Learn about Momentive range of fluorosilicone elastomers that are excellent for a wide range of industrial and transportation harsh conditions.
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