Select Your Region
- Manufacturer: Momentive
- Product Line: Momentive Silicone Elastomers
- Product: Liquid Silicone Rubber
- Industries: Building & Construction | Elastomers | Metal Processing & Fabrication | Plastics
- Authorized Countries: Canada | United States
Silopren™ LSR 4040
Silopren™ LSR 4040 is a two-component, 40A, medical-grade liquid silicone rubber with high transparency.
Quantity
Documents
Specifications
Form: Liquid
Color: Transparent
Density: 1.12 g/cm³
Shore A hardness: 40
Tensile strength, N/mm²: 9.0
Elongation at break, %: 750
Tear strength, N/mm: 25
Compression set (22 hrs at 175°C), %: 25
Primary Chemistry:
Liquid Silicone Rubber
- Manufacturer: Momentive
- Product Line: Momentive Silicone Elastomers
- Product: Liquid Silicone Rubber
- Industries: Building & Construction | Elastomers | Metal Processing & Fabrication | Plastics
- Authorized Countries: Canada | United States
Manufacturer
Product Line
Product
Authorized Countries
Canada
United States
Overview
Silopren™ LSR 4040 is a two-component liquid silicone rubber used to injection mold low-durometer parts. It is transparent, easily pigmented, and processed in a 1:1 mix ratio. LSR 4040 is FDA and USP Class VI compliant, making it suitable for healthcare applications.
Specifications
Form: Liquid
Color: Transparent
Density: 1.12 g/cm³
Shore A hardness: 40
Tensile strength, N/mm²: 9.0
Elongation at break, %: 750
Tear strength, N/mm: 25
Compression set (22 hrs at 175°C), %: 25
Primary Chemistry:
Liquid Silicone Rubber
Features & Benefits
- Excellent biocompatibility
- Stability to ozone and UV light
- Good transparency
- High thermal stability
- High recovery after puncture
- Easily pigmentable
Problems Solved
FDA and USP clearances for use of liquid silicone rubbers in medical applications
Transparency or recovery issues of traditional liquid silicone rubbers
Applications
Elastomeric articles
Sealing elements
Bellows
Baby teats
Catheters
Vibration dampers
Tube connectors
Medical equipment parts
Related Chemistries
Elastomers
Related End Markets
Elastomers
- Aerospace & Defense
- Agricultural
- Amusement and Recreation
- Automotive
- Building and Construction
- Chemical Process Industry - CPI
- Consumer
- E-mobility
- Electrical & Electronics
- Energy, Mining, Oil and Gas
- Machinery
- Medical & Healthcare
- Public Utilities
- Pulp & Paper
- Transportation
Related Functions
Building & Construction
Momentive Silicone Elastomers Articles
Momentive Fluorosilicone Elastomers
Learn about Momentive range of fluorosilicone elastomers that are excellent for a wide range of industrial and transportation harsh conditions.
Momentive Silicone for Biopharmaceuticals
Learn how Momentive silicones are keep up with new technology and medical advances in the biopharmaceutical industry.
Medical Silicone Compliance: Why It Matters
Healthcare-grade silicone elastomers must meet strict standards for purity, clarity, durability, and biocompatibility. Momentive’s Silopren™ LSR 4000 series is engineered to comply with these requirements, making it ideal for both disposable and reusable medical devices.
Silicone LSR for Micromolded Medical Applications
Momentive silicone elastomer liquid silicone rubber (LSR) grades are engineered for high-precision micromolding of medical components and surgical tools where performance, consistency, and compliance are nonnegotiable.
ChemPoint is here to help
Are you in the correct region?
We’ve detected that you are located in a different region than the region selected on the website. Would you like to change your region?
Current Region: English - United States
