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High-performance, two-part addition-cure silicone elastomer blend offering excellent processability and low compression set.
Designed for rapid room-temperature or elevated-temperature cure with minimal byproducts and excellent dimensional stability.
Outstanding thermal resistance from –60 °C to +200 °C after full cure, maintaining flexibility and mechanical integrity.
Excellent electrical insulation properties and UL 94 V-0 rated flame retardancy (when formulated with appropriate fillers).
Good adhesion to common substrates including plastics, metals, and glass without primer under optimized conditions.
Automotive sensor encapsulation and protective grommets requiring long-term reliability under thermal cycling.
Electrical and electronic potting compounds for power modules, LED drivers, and high-voltage connectors.
Medical device components where biocompatibility (ISO 10993-5/-10 compliant formulations) and sterilization resistance are critical.
Industrial sealing and gasketing solutions for demanding environments involving oil, ozone, and weather exposure.
Flexible bonding and conformal coating applications in aerospace and renewable energy systems.
| Chemical Type | Platinum-catalyzed addition-cure silicone elastomer blend |
| Product Form | Two-component liquid system (Part A: base polymer; Part B: crosslinker/catalyst) |
| Appearance | Translucent to opaque viscous liquid (color varies by formulation) |
| Primary Applications | Potting, encapsulation, sealing, gasketing, and flexible bonding |
| Key Features | Low viscosity, self-leveling, low shrinkage, excellent thermal & electrical insulation |
| Benefits | Reduced processing time, improved yield, extended service life in harsh environments |
| Cure Mechanism | Addition reaction (no condensation byproducts) |
| Storage Stability | ≥12 months at 25 °C in sealed original containers |
Q1: What is the primary function of DOWSIL EL-9048 in silicone elastomer formulations?
A: DOWSIL EL-9048 is a pre-compounded silicone elastomer blend designed to enhance processing efficiency and improve final part consistency—particularly in high-speed liquid silicone rubber (LSR) injection molding. It helps reduce viscosity during mixing and flow while supporting robust physical properties in cured articles.
Q2: Is DOWSIL EL-9048 compatible with standard platinum-cured LSR systems?
A: Yes, DOWSIL EL-9048 is formulated for compatibility with conventional platinum-catalyzed LSR base polymers and is typically used without requiring major reformulation. However, compatibility should be verified under actual processing conditions—including mixing time, temperature, and shear profile—due to variations in system composition.
Q3: How does DOWSIL EL-9048 affect cure kinetics and post-cure requirements?
A: DOWSIL EL-9048 is engineered to maintain typical platinum-cure profiles and does not significantly accelerate or inhibit crosslinking under standard conditions. Post-cure is generally recommended as per the host LSR system’s guidelines to ensure full network development and optimal extraction resistance.
Q4: Can DOWSIL EL-9048 be used in medical-grade or food-contact applications?
A: DOWSIL EL-9048 is intended for industrial and technical applications where regulatory compliance is determined by the full formulation and finished article. Customers targeting regulated markets must validate suitability through their own testing and qualification programs, including biocompatibility and extractables assessments, as Dow does not make direct regulatory claims for this grade.
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