EMI 1380 Closed-Cell Silicone Foam Tape

EMI 1380 Closed Cell Silicone Foam Tape is a medium-firm, liquid-cast silicone foam engineered for rugged sealing, cushioning, and vibration isolation in demanding environments. With a balanced combination of durability and compressibility, EMI 1380 is well-suited for high-temperature and food-grade applications. Comparable to HT-800, it meets UL 94 V-0 flame resistance standards and is FDA compliant for repeated food contact, making it an excellent solution for transportation, electronics, appliances, and enclosure gasketing tasks.

Applications include: High temperature or indirect food contact applications ranging from transportation, electronics, appliances, to enclosure sealing.

Technical Datasheet
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  • Ideal for high-temp gasketing, shock absorption, and environmental sealing in food-safe and industrial applications
  • Available from thickness ranging from 0.031 in to 0.5 in
Property Specification
Backing (Carrier) Material Closed-cell medium-firm liquid-cast silicone foam
Adhesive Material High performance acrylic, high temperature silicone PSA, or plain
Density (Metric) 368 kg/m³
Density (Imperial) 23 lb/ft³
Compression Force Deflection (kPa) 41-96 kPa
Compression Force Deflection (PSI) 6–14 psi
Compression Set (22 hrs. at 100°C/50%)
Water Absorption 0.3% (by weight)
Thermal Conductivity (K Value)
Tensile Strength (kPa) 220 kPa
Tensile Strength (PSI) 32 psi
Elongation at Break 80%
Shielding Effectiveness (Average 300kHz - 2.5GHz)
Product Color
Dielectric Strength
Volume Resistivity
Insulation Resistance
Certifications UL 94 V-0 rated, FDA 21 CFR 177.2600 compliant
Thickness (Imperial)
Thickness (Metric)
Maximum Operating Temperature (Celsius) 200°C
Maximum Operating Temperature (Fahrenheit) 392°F
Minimum Operating Temperature (Celsius) -48°C
Minimum Operating Temperature (Fahrenheit) -67°F
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