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High-performance addition-cure liquid silicone rubber (LSR) with excellent flow and low viscosity for precision molding.
Outstanding thermal stability and long-term reliability across operating temperatures from –50 °C to 200 °C.
Excellent compression set resistance and mechanical resilience after prolonged thermal aging.
Biocompatibility compliant with ISO 10993-5 and USP Class VI testing protocols.
Low extractables and minimal volatile organic compound (VOC) emissions, suitable for sensitive environments.
Medical device components including seals, gaskets, tubing connectors, and wearable sensor housings.
Automotive under-hood sealing systems requiring resistance to heat, oils, and vibration.
Consumer electronics interface pads, shock-absorbing mounts, and protective overmolds.
Industrial fluid handling components such as diaphragms, valves, and pump seals.
Optical bonding and light-diffusing elements in LED lighting assemblies.
| Chemical Type | Addition-cure platinum-catalyzed silicone elastomer |
| Product Form | Two-part liquid system (Part A + Part B) |
| Appearance | Translucent to slightly hazy viscous liquid |
| Primary Applications | High-precision injection molding, overmolding, and dispensing |
| Key Features | Low compression set, high elongation, excellent tear strength |
| Benefits | Reduced cycle times, superior part fidelity, consistent batch-to-batch performance |
| Curing System | Platinum-based addition cure at elevated temperature (e.g., 120–170 °C) |
| Shelf Life (Unopened, 25 °C) | 12 months from manufacture date |
Q1: What is the primary function of DOWSIL EL-9241 DM in silicone formulations?
A: DOWSIL EL-9241 DM is a high-molecular-weight dimethyl silicone elastomer designed to enhance elasticity, improve surface smoothness, and provide soft-touch characteristics in cured silicone rubbers and gels—particularly in medical-grade and personal care applications.
Q2: Is DOWSIL EL-9241 DM compatible with addition-cure (platinum-cure) silicone systems?
A: Yes, it is fully compatible with platinum-catalyzed addition-cure systems and does not interfere with cure kinetics or final mechanical properties when properly incorporated and dispersed.
Q3: How should DOWSIL EL-9241 DM be incorporated into a silicone formulation?
A: It is typically added during the base polymer mixing stage under moderate shear. Pre-warming the elastomer to reduce viscosity can aid dispersion, and thorough mixing ensures uniform distribution without phase separation.
Q4: Does DOWSIL EL-9241 DM affect the biocompatibility profile of finished silicone devices?
A: When used as directed in validated formulations, it supports compliance with relevant biocompatibility expectations for medical devices (e.g., ISO 10993 series), though final device qualification remains the responsibility of the manufacturer.
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