
FX219G5 – Silicone Potting & Encapsulation Compound
Everwide FX219G5 Silicone Potting Compound – high-thermal, UL94 V-0 silicone potting for electronic modules. Compare with Shin-Etsu KET-132 silicone potting.
• Item Name: LOCTITE® 660™
• Manufacturer: Henkel
• Technologies: Acrylic (Urethane Methacrylate)
• Color: Metallic Gray Paste
• Cure Type: Anaerobic, Secondary Cure with Activator
• Package Size: Contact to Avantek for details.
• Shelf Life: Contact to Avantek for details.
LOCTITE® 660™ is a high-strength, high-viscosity, anaerobic retaining compound formulated with urethane methacrylate. It is designed for bonding cylindrical fitting parts, especially where bond gaps can be as large as 0.50 mm. The product cures in the absence of air between close-fitting metal surfaces, ensuring a secure bond that resists shock and vibration. It is NSF registered (Category P1) for use as a sealant in non-food-contact areas in food processing environments.
| Property | Value |
|---|---|
| Chemical Type | Urethane methacrylate |
| Appearance | Metallic gray paste |
| Specific Gravity (@ 25°C) | 1.13 |
| Viscosity (Brookfield HBT, 25°C) | Spindle TB, 0.5 rpm: 1,000,000 to 2,000,000 mPa·s |
| Spindle TB, 5.0 rpm: 150,000 to 350,000 mPa·s | |
| Flash Point | See SDS |
| Components | One component – requires no mixing |
| Cure Type | Anaerobic (secondary cure with activator) |
| Fluorescence | No |
(Measured after 24 hours @ 23°C unless otherwise noted)
| Property | Value |
|---|---|
| Glass Transition Temperature (ISO 11359-2) | 100 °C |
| Coefficient of Thermal Expansion | Below Tg: 93 × 10⁻⁶ K⁻¹ |
| Above Tg: 184 × 10⁻⁶ K⁻¹ | |
| Thermal Conductivity (ISO 8302) | 0.1 W/(m·K) |
| Specific Heat | 0.3 kJ/(kg·K) |
| Elongation at Break (ISO 37) | <2% |
| Compressive Shear Strength (ISO 10123, Steel pins/collars) | ≥17.2 N/mm² (2,490 psi) |

Everwide FX219G5 Silicone Potting Compound – high-thermal, UL94 V-0 silicone potting for electronic modules. Compare with Shin-Etsu KET-132 silicone potting.

FX244-1 A specialized two-part silicone rubber designed for creating high-precision molds. This material features a unique oil-bleeding property that creates a self-releasing surface, eliminating the need for external non-stick sprays during demolding.

As the year draws to a close and the Christmas season arrives, Avantek Viet Nam would like to extend our warmest Christmas greetings to all our valued customers, partners, and friends.

Partial Gasket & Seal Strategies Using Henkel Loctite SI 5910
Gasket sealing is a core part of many industrial assembly and maintenance operations — from automotive engine housings to HVAC covers and machinery flanges. When selecting a gasketing solution, you need something that forms reliably in place, resists movement and fluids, and simplifies application — which is where Henkel Loctite SI 5910 fits perfectly
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