DOWSIL 93-076-2
Harmonization Code : 2901.10.00.00 | Acyclic hydrocarbons; Saturated
Main features
- Two-Hour Mixed Work Window
- 680 psi Cured Tensile Strength
- 10:1 Controlled Mixing
Product Description
DOWSIL 93-076-2 RF Sealant mixes at 10:1 by weight to create a high-viscosity, two-part silicone elastomer sealant that cures at room temperature. The catalyzed material has a two-hour working time at 25 deg C and an extrusion rate of 35 g/min after two hours, providing a defined application window for controlled bead placement. It sets up in 24 hours and reaches optimum physical properties in five days. After 24 hours at 25 deg C and 50% relative humidity, the sealant has 680 psi tensile strength, 120 ppi Die B tear strength and 350% elongation; Shore A hardness reaches 46 after five days.
Key features
- 10:1 base-to-catalyst mix: Provides a defined two-part preparation ratio by weight.
- Two-hour working time: Supports controlled application before viscosity build.
- High cured strength: Typical tensile strength is 680 psi with 120 ppi Die B tear strength.
Applications
High-performance sealing applications using a two-part room-temperature-cure silicone elastomer.
Technical Specifications
General Properties
Mechanical Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Typical component and mixed-material properties. Values are not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Base / curing-agent color | Gray / turquoise | As supplied | |
| Mix ratio | 10:1 | Base to curing agent by weight | |
| Working time | 2 | hr | At 25 deg C |
| Extrusion rate | 35 | g/min | Two hours after mixing; CTM0364 |
| Set-up time | 24 | hr | Room-temperature cure |
| Optimum property development | 5 | days | Room-temperature cure |
| Shelf life | 9 | months | At or below 32 deg C; original unopened containers |
After-processing / final-state properties
Typical physical properties after 24 hours at 25 deg C and 50% relative humidity; hardness uses the five-day value.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Durometer hardness | 46 | Shore A | CTM0099 / ASTM D2240; five-day value |
| Tensile strength | 680 | psi | CTM0137A / ASTM D412 |
| Tear strength, Die B | 120 | ppi | CTM0159A |
| Elongation at break | 350 | % | After 24 hr at 25 deg C and 50% RH |
