DOWSIL 6-1104 CV SILICONE SEALANT
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

Main features
- Low-Outgassing Vacuum Sealing
- 610% Cured Elongation
- One-Part Moisture-Cure Sealing
Product Description
DOWSIL™ 6-1104 CV Sealant is a one-part, nonflow, translucent moisture-cure RTV silicone sealant for sealing and bonding applications on space hardware. Its low level of volatile condensable materials supports use in high-vacuum environments, while 610% typical elongation provides flexibility for stress-relieving joints. The cured silicone also combines electrical insulation properties with a thermal conductivity of 0.2 W/m·K, making it suitable for aerospace and space-hardware assemblies requiring a flexible sealing or bonding material.
Key features
- Low volatile condensable content: Supports sealing and bonding applications in high-vacuum space environments.
- High elongation: Provides 610% typical elongation for flexible joints and stress relief after cure.
- Nonflow, one-part formulation: Enables application to localized sealing and bonding areas without component mixing.
Applications / Suitable for
- Sealing on space hardware
- Bonding on space hardware
- High-vacuum aerospace assemblies requiring a low-volatility silicone sealant
TDS, SDS & Technical Documents
- 11-1189-dowsil-6-1104-cv-sealant TDS
- 11-3982-01-dowsil-space-grade-silicone-sealants TDS
- DOWSIL™ 6-1104 CV SealantDOWSIL 6-1104 CV Sealant-Safety Data Sheet-EN
- 11-4421-01-imagine-the-frontiers-of-tomorrow
- 11-3921-01-advanced-silicone-adhesives-and-sealants (1)
- 11-3991-01-aerospace-defense-avionics-product-selection-guide (1)
Technical Specifications
General Properties
Physical Properties
Mechanical Properties
Physical Properties
Electrical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical characteristics of the sealant in its supplied state before moisture cure.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Translucent / clear | — | As supplied; typical |
| Flow characteristic | Nonflow | — | As supplied |
| Cure system | Moisture-cure RTV | — | One-part room-temperature-vulcanizing silicone |
| Shelf life | 360 | days | Typical published value; storage conditions not specified in the supplied product overview |
After-processing / final-state properties
Typical properties of the cured sealant. Values are not intended as guaranteed specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Durometer hardness | 41 | Shore A | Cured sealant; typical |
| Elongation | 610 | % | Cured sealant; typical |
| Tensile strength | 925 | psi | Cured sealant; typical |
| Shear strength | 220 | psi | Cured sealant; substrate and test method not specified in the supplied product overview |
| Dielectric strength | 550 | V/mil | Cured sealant; typical |
| Volume resistivity | 1.37 × 1015 | Ω·cm | Cured sealant; typical |
| Dielectric constant | 2.59 | — | At 100 Hz; cured sealant; typical |
| Thermal conductivity | 0.2 | W/m·K | Cured sealant; typical |





















