• Item Name: LOCTITE® SI 5240™
• Manufacturer: Henkel
• Technologies: Silicone
• Color: Clear liquid with yellow to green tint (slight haze permissible)
• Cure Type: Ultraviolet (UV) / Visible light with secondary moisture cure
• Package Size: Contact to Avantek for details.
• Shelf Life: Contact to Avantek for details.
LOCTITE® SI 5240™ is a one-component, alkoxy silicone-based sealant that cures with ultraviolet (UV) and visible light, with a secondary moisture cure for shadowed areas. It forms a medium-strength, flexible rubber sealant with excellent flow characteristics, making it suitable for various industrial applications.
Fast fixture time on plastics and rubbers
Low viscosity for capillary action and close-fitting parts
Excellent adhesion to porous and acidic substrates
One-component system – no mixing required
Room-temperature cure
Clear bond line for aesthetic applications
Bonding plastics and elastomers
Assembly of small components
Medical device components (non-implant)
Electronic parts and housings
General industrial instant bonding
| Property | Value |
|---|---|
| Specific Gravity | 1.06 |
| Viscosity (Brookfield RVT, Spindle 5, 10 rpm) | 15,000 – 35,000 mPa·s (cP) |
| Appearance | Clear liquid with yellow to green tint |
| Condition | Time |
|---|---|
| UV Cure (Zeta® 7760, 225 mW/cm²) | 50 – 55 sec |
| UV Cure (Electrodeless, 500 mW/cm²) | 5 – 10 sec |
| Depth of Cure (70 mW/cm² @ 365 nm, 60 sec) | ≥10 mm |
| Property | Value |
|---|---|
| Shore Hardness (Durometer A) | ≥40 |
| Elongation at Break | 250 – 450% |
| Tensile Strength | ≥3 N/mm² (≥435 psi) |
| Tear Strength (ISO 34-1, Die C) | 12.6 N/mm (72 lb./in.) |
| Volume Resistivity | 1.2 × 10¹⁵ Ω·cm |
| Dielectric Breakdown Strength | 21 kV/mm |
| Aging Condition | Change in Properties |
|---|---|
| 85°C, 85% RH (168 hrs) | -84% Tensile Strength, -64% Elongation |
| 100°C (168 hrs) | +26% Tensile Strength, -26% Elongation |
| 150°C (168 hrs) | -47% Tensile Strength, -27% Elongation |
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Avantek Viet Nam is a dynamic MRO, direct materials and equipment supplier that brings advanced technological solutions to maximize satisfaction of customers.
We are expert in import and export of adhesives, accessories and equipment in both domestic and cosmetic industrial fields, production and technology research and development.
Our solutions promise to bring best optimal effectiveness along with competitive prices, excellent customer services, dedicated on-site support.
Office address: The Verosa Park, 39 street 10, Quarter 2, Long truong Ward, Ho Chi Minh City, Viet Nam
Website: avantek.vn
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