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Silopren™ LSR 2740 is a general purpose self bonding injection molding silicone rubber grade that offers adhesion to a variety of metals and engineered plastics without the use of a primer and without adhesion to the mold. Adequate bond strength is reached after a short post cure or by longer storage at room temperature. The self bonding property of LSR 2740 8040 makes it a cost effective solution for multi component injection molding or insert molding.
Product Specifications
Density: 1.12 g/cm³ Hardness, 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
Features & Benefits
Primer less adhesion to many substrates 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
Problems Solved
Requiring a primer for the adhesion of liquid silicon 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
Applications
Overmolding Sealing elements Automotive connectors Membranes Vibration dampening elements
Momentive offers a range of LSR products that enable the production of a broad range of disposable and reusable medical devices and supplies. It meets regulatory compliance, biocompatibility, and withstands repeated sterilization processes.
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