| Description: Liquid silicone rubbers, or LSRs, are elastomer systems reinforced with silica. They contain functional polymers of lower average molecular weight and viscosity when compared to high consistency rubbers (HCRs). They are typically supplied as two-component systems and formulated in a 1:1 mix ratio. Because their consistency is akin to petroleum jelly, they are often pumped with injection molding equipment to form molded components such as o-rings, gaskets, valves, seals, and other precision molded parts. LSRs are designed for liquid injection molding (LIM) processes which may utilize single or multi-cavity molds, or for overmolding processes. Originally designed for automated systems, they are developed with high volume applications in mind and benefit from their high strength. Features of liquid silicone rubbers include the following: - Ideal for high throughput manufacturing
- Platinum cure system—no post cure required
- Typical work time in excess of 72 hours
- Cure rapidly at elevated temperatures
- Easily pigmented using NuSil color masterbatches
Comments: Injection Molding ElastomerCure System: Platinum Information provided by NuSil |
