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Silopren™ LSR 2740
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
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Documents
- Manufacturer: Momentive
- Product Line: Momentive Silicone Elastomers
- Product: Liquid Silicone Rubber
- Industries: Building & Construction | Elastomers | Metal Processing & Fabrication | Plastics
- Authorized Countries: Canada | United States
Fulfilled By ChemPoint
Fulfilled By ChemPoint
Manufacturer
Product Line
Product
Authorized Countries
Canada
United States
Overview
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.
Specifications
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
Features & Benefits
- 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
Problems Solved
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
Applications
Overmolding
Sealing elements
Automotive connectors
Membranes
Vibration dampening elements
Machinery
Consumer goods
Related Chemistries
Elastomers
Related End Markets
Related Functions
Building & Construction
Related Properties
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FAQs
What is Silopren™ LSR 2740 used for?
Silopren™ LSR 2740 is a self- bonding liquid silicone rubber used in injection molding applications requiring primerless adhesion, high-temperature stability, and flexibility. Common uses include overmolding, sealing elements, membranes, and vibration dampening components.
Is Silopren™ LSR 2740 a self bonding liquid silicone rubber?
Yes. Silopren™ LSR 2740 is a self-bonding liquid silicone rubber that provides adhesion to various metals and engineered plastics without requiring a primer.
What Shore A hardness does Silopren™ LSR 2740 have?
Silopren™ LSR 2740 has a Shore A hardness of 40, providing a balance of flexibility, mechanical strength, and durability for a wide range of molded applications.
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