DOWSIL 832
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- Primerless Multi-Substrate Adhesion
- One-Part Low-Odor Neutral Cure
- -55 to 149 deg C Service
Product Description
DOWSIL™ 832 Multi-Surface Adhesive Sealant is a one-component, ready-to-use, 100% silicone RTV for bonding, sealing, assembly, and maintenance applications. The nonslumping paste cures through atmospheric moisture using a low-odor, neutral alcohol cure that is noncorrosive to metals and other corrosion-sensitive materials. It provides unprimed adhesion to many common substrates, including glass, metals, masonry, concrete, rubber, ABS, PVC, and polycarbonate. The cured material forms a flexible silicone rubber seal with a typical Shore A hardness of 35, tensile strength of 350 psi, and elongation of 420%. Applications include roof penetrations, gutters, concrete floor seams, marine equipment and windows, pipes, threaded connections, and original equipment assembly.
Key features
- Broad substrate adhesion: Provides superior unprimed adhesion to a wide variety of glass, metal, masonry, concrete, rubber, and plastic surfaces.
- Neutral, noncorrosive cure: The low-odor alcohol-cure system is suitable for use with metals and other corrosion-sensitive materials.
- Flexible cured silicone: Delivers 420% typical elongation and a continuous use-temperature range from -55 to 149°C.
Applications / Suitable for
- Sealing and repairing roof penetrations, gutters, and concrete floor seams
- Marine equipment, windows, pipes, and threaded connections
- Bonding, sealing, and assembly of original equipment components
Technical Specifications
Physical Properties
General Properties
Mechanical Properties
Additional Information
DOWSIL™ 832 Multi-Surface Adhesive Sealant
A one-component, ready-to-use silicone RTV for bonding, sealing, assembly, and maintenance. The low-odor, neutral alcohol cure is noncorrosive to metals, while superior unprimed adhesion supports application to glass, metals, masonry, concrete, rubber, ABS, PVC, polycarbonate, and other common substrates.
One-component DOWSIL™ 832 Multi-Surface Adhesive Sealant for industrial assembly, sealing, and maintenance.
As-supplied properties
Typical values are provided for product evaluation and are not intended for use as guaranteed specifications. Cure-related values are measured at 25°C and 50% relative humidity.
| Property | Value | Unit | Condition or context |
|---|---|---|---|
| Consistency | Nonslumping paste | — | One-component, ready-to-use material |
| Corrosion properties | Noncorrosive | — | Neutral alcohol cure |
| Extrusion rate | 133 | g/min | CTM 0364; 1/8-inch nozzle at 90 psi |
| Viscosity | 496 | Pa·s | CTM 1377; low shear at 1 s-1 |
| Viscosity | 172 | Pa·s | CTM 1377; high shear at 10 s-1 |
| Skin-over time | 20 | minutes | CTM 0098; 25°C and 50% relative humidity |
| Tack-free time | 50–90 | minutes | CTM 0095; 25°C and 50% relative humidity |
| Specific gravity | 1.33 | — | CTM 0022 at 25°C |
Application and cure
Apply DOWSIL™ 832 to clean, dry, frost-free surfaces. The ready-to-use material requires no mixing and cures through reaction with moisture in the air. Primer is typically unnecessary, although DOWSIL™ 1205 PR-Prime Coat is recommended for best adhesion to concrete.
Store at or below 32°C. Under these conditions, the product has a usable life of 18 months from its date of manufacture. For best results, use the material completely within six months after opening and keep the container sealed when not in use. A cured plug may form in the dispensing tip during storage; it can be removed without affecting the remaining material.
Cured properties
Typical laboratory values after seven days of cure at 25°C and 50% relative humidity. These values are not intended for use as guaranteed specifications or universal joint-performance limits.
| Property | Typical value | Unit or condition |
|---|---|---|
| Color | Off-white, black, gray | Selected colors |
| Durometer hardness | 35 | Shore A; CTM 0099 |
| Tensile strength | 350 | psi; CTM 0137A |
| Elongation | 420 | %; CTM 0137A |
| Peel strength — ABS | >35 | ppi; CTM 0293 |
| Peel strength — polycarbonate, unprimed | >35 | ppi; CTM 0293 |
| Peel strength — PVC | >30 | ppi; CTM 0293 |
| Peel strength — milled aluminum | >35 | ppi; CTM 0293 |
| Peel strength — carbon steel | >35 | ppi; CTM 0293 |
| Peel strength — copper | >35 | ppi; CTM 0293 |
| Peel strength — glass | >30 | ppi; CTM 0293 |
| Continuous use temperature | -55 to 149 | °C (-67 to 300°F) |
| Intermittent use temperature | 177 | °C (350°F) |
Bonding, sealing, and maintenance applications
DOWSIL™ 832 is used where broad adhesion or a noncorrosive silicone sealant is required for repair, maintenance, sealing, or component assembly.
Product resources
Evaluate DOWSIL™ 832 for your application
Contact Krayden for support evaluating substrate adhesion, surface preparation, primer requirements, application conditions, packaging options, joint limitations, and service-temperature requirements for your bonding, sealing, assembly, or maintenance process.
