LOCTITE SI 5699
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- One-Component Oxime RTV Silicone
- Non-Corrosive Flange Sealant
- Rigid-Flange Sealing Applications
Product Description
LOCTITE® SI 5699™ is a one-component, oxime silicone RTV sealant designed primarily for flange sealing applications. The non-corrosive, thixotropic formulation is particularly suited for rigid flange sealing on transmissions, cast metal housings, and similar industrial assemblies. It cures at room temperature to form a durable, flexible silicone gasket while offering excellent environmental resistance and minimizing material migration after application. Based on the uploaded datasheet image.
Key Features & Benefits
- One-component RTV silicone sealant.
- Oxime cure technology.
- Non-corrosive formulation.
- Designed for rigid flange sealing.
- Thixotropic consistency minimizes migration.
- Excellent environmental resistance.
- NSF Category P1 registered.
- Suitable for automotive and industrial assemblies.
Recommended Applications
- Transmission housing sealing.
- Cast metal housing flanges.
- Rigid flange gasketing.
- Industrial equipment sealing.
- Maintenance and repair sealing operations.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Appearance
Grey paste Appearance at room temperature.
Specific Gravity
1.45 Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.
For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
Additional Information
Technical Properties
As-Supplied / Before-Processing Properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Technology | Silicone | — | RTV flange sealant |
| Chemical Type | Oxime Silicone | — | Non-corrosive chemistry |
| Appearance | Grey Paste | — | Uncured material |
| Components | One Component | — | No mixing required |
| Consistency | Thixotropic | — | Reduced migration after application |
| Specific Gravity | 1.45 | — | 20°C |
| Extrusion Rate | ≥200 | g/min | 0.62 MPa, 25°C, Semco cartridge |
| Tack-Free Time | ≤30 | minutes | 25°C / 50±5% RH |
Technical Properties
After-Processing / Final-State Properties
| Property | Value | Unit | Condition / Method |
|---|---|---|---|
| Shore Hardness | 48 | Shore A | ISO 868, cured 1 week |
| Water Vapor Transmission Rate | 5.2 | g/(h·m²) | Typical cured value |
| Water Absorption | 0.87 | % | 24 h immersion at room temperature |
| Glass Transition Temperature | -52 | °C | Typical cured value |
| Coefficient of Thermal Expansion | 255 | µm/m·K | Typical cured value |
| Elongation at Break | 230 | % | Typical cured value |
| Tensile Strength | 2.8 | N/mm² | Typical cured value |
| Tear Strength | 9.5 | N/mm | ISO 34-1 |
| Depth of Cure | 10 | mm | Maximum depth, PTFE mold strip |
| Lap Shear Strength | 1.3 | N/mm² | ISO 4587, Aluminum substrate |
