Silicone and MS Polymer Sealant · Silicone Sealant
One-Component Silicone Bonding Sealant ZLA-4402
ZLA-4402 is a one-component, moisture-curing silicone sealant for bonding, fixing and sealing electronic parts. It is tack-free in 5 to 10 minutes and cures to a Shore A 55 to 65 rubber.
Cured, it is a strong insulator (10¹⁵ Ω·cm or more) for high-voltage points where corona and leakage currents are a concern, and the rubber keeps out humidity and damps vibration.
It has a neutral, alkoxy cure that releases methanol as it sets, so use it with good ventilation. Available in white (ZLA-4402) and black (ZLA-4402B).
The full technical data sheet for ZLA-4402 is available on request. Request the data sheet
Product specifications
| Property | Value | Condition / test method |
|---|---|---|
| Colour | White or black | |
| System | One-component | |
| Consistency | Paste | |
| Density (g/cm³) | 1.5±0.1 | Test method: ASTM D792 |
| Tack-free time (min) | 5–10 | 25 °C |
| Hardness (Shore A) | 55–65 | Test method: ASTM D2240 |
| Tensile strength (MPa) | ≥2.0 | Test method: ISO 527-2 |
| Lap shear strength, aluminium (MPa) | ≥1.0 | |
| Thermal conductivity (W/m·K) | 0.3 | Test method: ASTM D5470 |
| Volume resistivity (Ω·cm) | ≥10¹⁵ | |
| Flammability | V-0 | Test method: UL 94 |
- Colour
- White or black
- System
- One-component
- Consistency
- Paste
- Density (g/cm³)
- 1.5±0.1
- Test method: ASTM D792
- Tack-free time (min)
- 5–10
- 25 °C
- Hardness (Shore A)
- 55–65
- Test method: ASTM D2240
- Tensile strength (MPa)
- ≥2.0
- Test method: ISO 527-2
- Lap shear strength, aluminium (MPa)
- ≥1.0
- Thermal conductivity (W/m·K)
- 0.3
- Test method: ASTM D5470
- Volume resistivity (Ω·cm)
- ≥10¹⁵
- Flammability
- V-0
- Test method: UL 94
Typical values, not for specification. Confirm critical properties on your own parts before production.
Features
- Ready to use: one component, no mixing
- Tack-free in 5 to 10 min at 25 °C
- High insulation: volume resistivity 10¹⁵ Ω·cm or more
- Lap shear 1.0 MPa or more on aluminium; tensile strength 2.0 MPa or more
- Rated V-0 to UL 94; RoHS compliant
Product applications
- Holding heavy components such as capacitors and coils against vibration
- Insulating high-voltage points on power supply boards
- Sealing joints and openings in power supply housings
Related products
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ZLA-4404One-Component MS Polymer Bonding Sealant
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ZLA-8102One-Component Thermally Conductive MS Polymer Sealant
2 W/m·K · tack-free 5–10 min
ZLA-8104Non-Curing Reworkable Sealant
Non-curing · reopenable · V-0
ZLA-8202
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