Features Of Dow DOWSIL MS-1001 Moldable Silicone
Room-temperature moldable silicone with no mixing or curing required — ready to use straight from the package.
Excellent adhesion to a wide range of substrates including metals, plastics, glass, and ceramics without primers.
Retains flexibility and elasticity over time, with outstanding resistance to thermal cycling (-55 °C to +200 °C).
Low compression set and high resilience for long-term sealing and cushioning performance.
Non-corrosive, halogen-free formulation compliant with RoHS and REACH requirements.
Typical Applications Of Dow DOWSIL MS-1001 Moldable Silicone
Custom gasketing and sealing in automotive electronics and powertrain assemblies.
Vibration-damping pads and shock-absorbing mounts for industrial sensors and control units.
Conformal shielding and environmental protection for PCBs and LED modules in outdoor lighting fixtures.
Thermal interface gap-filling between heat sinks and power semiconductors in EV inverters.
Reusable prototyping seals and temporary tooling liners in precision manufacturing jigs.
Specifications Of Dow DOWSIL MS-1001 Moldable Silicone
| Chemical Type | Platinum-cured methylvinyl silicone elastomer |
| Product Form | Pre-formed solid sheet or roll (custom thicknesses available) |
| Appearance | Opaque off-white, uniform texture, non-tacky surface |
| Hardness (Shore A, ASTM D2240) | 30 ± 5 |
| Density (g/cm³, ASTM D792) | 1.18–1.22 |
| Operating Temperature Range | −55 °C to +200 °C (continuous) |
| Primary Applications | Gasketing, sealing, vibration damping, thermal gap filling |
| Key Features | Moldable at RT, repositionable, no cure delay, excellent dielectric properties |
Dow DOWSIL MS-1001 Moldable Silicone – Frequently Asked Questions (FAQ)
Q1: What is the primary function of DOWSIL MS-1001 in polymer formulations?
A: DOWSIL MS-1001 is a moldable silicone additive designed to enhance surface slip, improve mold release performance, and reduce friction in thermoplastic and thermoset systems—without significantly affecting mechanical properties or clarity.
Q2: Is DOWSIL MS-1001 compatible with common engineering resins such as polypropylene, ABS, and polycarbonate?
A: Yes, DOWSIL MS-1001 demonstrates broad compatibility with many thermoplastics and thermosets. It is commonly used in PP, ABS, PC, and PA-based compounds, though optimal dispersion and performance should be verified through application-specific testing.
Q3: How is DOWSIL MS-1001 typically incorporated into a compound?
A: It is generally added during compounding—via side feeder, gravimetric dosing, or masterbatch dilution—and disperses effectively under standard melt-processing conditions. Pre-drying is not required, and it remains stable at typical extrusion and injection molding temperatures.
Q4: Does DOWSIL MS-1001 affect regulatory compliance for food-contact or medical-grade applications?
A: DOWSIL MS-1001 is not pre-approved for direct food-contact or medical applications. Formulators must conduct full regulatory evaluation—including migration testing and toxicological review—as final compliance depends on the complete formulation, processing conditions, and end-use requirements.
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