LOCTITE SI 5470
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- Dual-Cure Sealing Processing
- Low-Modulus Cured Sealing
- Strong Plastic/Metal Adhesion
Product Description
LOCTITE® SI 5470™ is a dual-cure UV and moisture-curing silicone gasket material engineered to create soft, flexible, low-modulus foam gaskets for sealing applications. The product contains mechanically mixed nitrogen gas that produces a closed-cell foam structure and provides excellent adhesion to both plastics and metals. Functional strength develops almost instantly upon UV exposure, while secondary moisture cure ensures complete curing in shadowed areas and continued property development over 72 hours.
Key Features & Benefits
- Dual-cure UV and moisture silicone technology.
- Creates a closed-cell foam gasket structure.
- Fast UV cure with secondary moisture cure.
- Soft, flexible, low-modulus sealing material.
- Excellent adhesion to plastics and metals.
- Functional strength develops almost immediately after UV exposure.
- Service temperature range from -40°C to +150°C.
Recommended Applications
- Foam-in-place gasketing.
- Plastic enclosure sealing.
- Metal housing sealing.
- Environmental protection seals.
- Serviceable gasket applications.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
AppearanceAppearance
White/pale yellow pasteSpecific GravitySpecific Gravity
1.03Additional Information
Technical Properties
As-Supplied / Before-Processing Properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Technology | Silicone | — | Dual-cure foam gasket system |
| Chemical Type | Acetoxy Silicone | — | Foamed silicone formulation |
| Appearance | White / Pale Yellow Paste | — | Uncured material |
| Components | One Component with Nitrogen Gas | — | Mechanically mixed |
| Primary Cure | Ultraviolet Light | — | Rapid cure mechanism |
| Secondary Cure | Moisture | — | Shadow-area curing |
| Temperature Range | -40 to +150 | °C | Service range |
| Specific Gravity | 1.03 | — | 25°C |
| Extrusion Rate | 155 | g/min | 0.62 MPa, 25°C |
Technical Properties
After-Processing / Final-State Properties
| Property | Value | Unit | Condition / Method |
|---|---|---|---|
| Tack-Free Time | 15 | seconds | ASTM C679, 70 mW/cm² @ 365 nm |
| UV Depth of Cure | 12 | mm | 60 sec @ 70 mW/cm² |
| Shore Hardness | 54 | Durometer OO | ISO 868 |
| Elongation at Break | 163 | % | ISO 37 |
| Tensile Strength | 0.3 | N/mm² | ISO 37 |
| Compression Set (20% Deflection) | 21 | % | 22 h @ 25°C |
| Compression Set (30% Deflection) | 20 | % | 22 h @ 25°C |
| Compression Set (40% Deflection) | 19 | % | 22 h @ 25°C |
