
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.
Brands: VHB™
Package Size: Standard Length 32.9 m (36 yd)
Minimum Width: 6.4 mm (0.25 in)
Maximum Width: 1219 mm (48 in)
Core Size (ID): 76.2 mm (3 in)
Shelf Life: 24 months
3M™ VHB™ Tape 4957F is a 0.062 inch (1.6 mm) thick gray double-sided acrylic foam tape with a PET liner. The low-temperature appliable acrylic adhesive on both sides allows bonding down to 0°C (32°F) and adheres well to a broad range of high surface energy substrates, including metals, glass, and easy-to-bond paints and plastics. The conformable foam ensures good contact between substrates even when slightly mismatched. 3M™ VHB™ Tape 4957F is part of the 4951 tape family, which shares the same adhesive but differs in thickness, color, and foam type.
| Attribute | Test Method | Value |
|---|---|---|
| Color | – | Gray |
| Adhesive Type | – | Low Temperature Appliable Acrylic |
| Foam Type | – | Conformable Acrylic Foam |
| Density | ASTM D3574 | 720 kg/m³ (45 lb/ft³) |
| Total Tape Thickness | ASTM D3652 | 1.6 mm (62 mil) (0.062 in) ±10% |
| Liner | – | PET |
| Primary Liner Color | – | Clear |
| Liner Thickness | – | 0.05 mm (0.002 in) |
Temperature: 23 °C (73 °F), Dwell Time: 72 h
| Test | Test Method | Substrate | Value |
|---|---|---|---|
| 90° Peel Adhesion | ASTM D3330 | Stainless Steel, 5 mil Aluminum Foil | 20 lb/in |
| 90° Peel Adhesion | ASTM D3330 | Stainless Steel, 2 mil Aluminum Foil | 35 N/cm |
| Normal Tensile | ASTM D897 | Aluminum | 520 kPa (75 lb/in²) |
| Overlap Shear Strength | ASTM D1002, ISO 4587 | Stainless Steel | 480 kPa (70 lb/in²) |
| Static Shear (23°C / 73°F) | ASTM D3654 | Stainless Steel | 1,000 g |
| Static Shear (66°C / 150°F) | ASTM D3654 | Stainless Steel | 500 g |
| Static Shear (93°C / 200°F) | ASTM D3654 | Stainless Steel | 500 g |
| Minimum Application Temperature | – | – | 0 °C (32 °F) |
| Short-Term Temperature Resistance | – | – | 149 °C (300 °F) |
| Long-Term Temperature Resistance | – | – | 93 °C (200 °F) |
90° Peel Adhesion (Stainless Steel, 72h Dwell, 5 mil Aluminum Foil, Immersion in Chemicals)
| Environmental Condition | Adhesion Retention (%) |
|---|---|
| Water | 100% |
| Salt Water | 100% |
| Hydraulic Fluid | 100% |
| 10W30 Motor Oil | 100% |
| Ethylene Glycol | 100% |
| Kerosene | 90% |
| Isopropyl Alcohol (IPA) | 50% |
| Jet Fuel | 50% |
| Gasoline | 35% |
| MEK (Methyl Ethyl Ketone) | 5% |
(Note: Tape should not be continuously submerged in these chemicals. Testing was conducted after 72-hour immersion and 45-minute removal)

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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