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Low-compression-set silicone elastomer blend offering excellent long-term sealing performance under dynamic and static conditions.
High thermal stability with continuous service capability up to 200 °C and short-term resistance to 250 °C.
Good processability via injection molding, compression molding, and extrusion—compatible with standard silicone processing equipment.
Excellent electrical insulation properties and inherent flame retardancy (UL 94 HB rated).
Outstanding resistance to ozone, UV radiation, and weathering without requiring additional stabilizers.
Automotive under-hood gaskets and vibration-damping mounts.
Industrial fluid-handling seals for pumps, valves, and connectors exposed to hot oils and coolants.
Electrical enclosures and potting components in power distribution systems.
Medical device housings and wearable sensor interfaces requiring biocompatibility support (ISO 10993-tested compatibility available upon request).
Aerospace environmental seals for avionics and cabin systems.
| Chemical Type | High-consistency silicone rubber (HCR) blend based on vinyl-terminated polydimethylsiloxane and silica-reinforced crosslinked network |
| Product Form | Uncured, pre-compounded gum stock in roll or slab form |
| Appearance | Opaque off-white to light tan, uniform consistency with no visible particulates |
| Primary Applications | High-performance static and dynamic sealing, gasketing, and encapsulation |
| Key Features | Low compression set, high thermal endurance, excellent electrical insulation, good processability |
| Benefits | Extended service life in demanding environments, reduced maintenance frequency, broad processing flexibility |
| Curing System | Pt-catalyzed addition cure (peroxide-cure variants available upon request) |
| Shelf Life | 12 months from date of manufacture when stored at ≤25 °C in original unopened packaging |
Q1: What is the primary function of Dow Corning 9045 LC in silicone formulations?
A: Dow Corning 9045 LC is a liquid silicone elastomer blend designed to enhance elasticity, improve surface smoothness, and provide controlled rheology in cured silicone systems—particularly in addition-cure (platinum-catalyzed) RTV and LSR formulations.
Q2: Is Dow Corning 9045 LC compatible with both high-consistency rubber (HCR) and liquid silicone rubber (LSR) systems?
A: Yes—it is formulated for compatibility with a broad range of platinum-cured silicone elastomers, including both HCR and LSR. It integrates readily into base polymers without phase separation and supports consistent dispersion during mixing and processing.
Q3: How does Dow Corning 9045 LC affect cure kinetics and final mechanical properties?
A: It typically does not significantly inhibit or accelerate platinum-catalyzed cure under standard conditions. When incorporated, it generally enhances elongation at break and tear resistance while maintaining good tensile strength—effects depend on concentration and overall formulation balance.
Q4: Can Dow Corning 9045 LC be used in applications requiring biocompatibility or skin contact?
A: While the product is based on medical-grade silicone chemistry, its suitability for biocompatible or skin-contact applications depends on full system validation—including finished part extraction testing and regulatory review. Customers must assess compliance with relevant end-use requirements independently.
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E-mail: wangxingqiang@ericwchem.com
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