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
AppearanceAppearance
Grey pasteSpecific GravitySpecific Gravity
1.45Additional 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 |
