EMI Shielding Conductive Foam Gasket
This full-directional conductive foam adopts high-rebound PU foam as inner core, wrapped with nickel-copper plated conductive fabric to realize X/Y/Z 3-axis conductivity. It is precision die-cut with kiss-cut technology, pre-slit into strips and retained on white release liner with conductive adhesive. Peel off the release liner for direct pasting and assembly.
As an EMI shielding gasket, it is applied for EMI shielding, static discharge and reliable grounding of gaps in electronic housings. It also delivers cushioning, shock absorption and dust sealing performance. Custom sizes and shapes are available to meet EMC electromagnetic compatibility requirements for telecommunications, automotive, consumer electronics and other industries. As an OEM die-cutting partner, we also configure custom conductive foam gaskets to your BOM — including private-label packaging and kitting.
Product Features
- 3-axis full-directional conductivity for grounding & anti-static — Ni/Cu plated conductive fabric wrapping structure realizes X/Y/Z three-direction conduction with low surface resistance. It quickly releases static electricity, eliminates potential difference of housing and provides stable & reliable grounding.
- Wide-band EMI electromagnetic shielding — Shielding effectiveness reaches 70–80dB within 10MHz–3GHz. It blocks electromagnetic wave leakage and radio frequency crosstalk, meeting EMC electromagnetic compatibility test standards.
- Low compression force & high rebound cushioning — Soft foam substrate can be compressed under low pressure with small compression set. It fits irregular gaps of equipment housing, will not damage precision electronic components, and provides shock absorption and dust sealing.
- Flexible die-cutting for high assembly efficiency — Custom shapes including long strips, rings, L-shapes and special profiles are supported. This product uses kiss-cut process, finished parts stay on release liner for fast peeling and pasting, greatly improving production assembly efficiency.
- Eco-friendly with optional flame retardant grade — Standard products comply with RoHS and REACH EU environmental directives. UL94-V0 flame retardant grade is optional to satisfy safety specifications of telecom power, automotive and medical devices.
- Wide temperature stability & anti-aging — Normal working temperature ranges from -40°C to +85°C. It is vibration-resistant and anti-oxidative, maintaining stable conductivity and rebound performance after long-term use.
Technical Specification
| Test Item | Typical Value | Test Standard |
| Surface Resistivity | ≤0.05 Ω/□ | ASTM F390 |
| Z-axis Vertical Resistance | ≤0.03 Ω | ASTM F390 |
| Shielding Effectiveness | 70–80dB (10MHz–3GHz) | ASTM D4935 |
| Foam Density | 45±5 kg/m³ | GB/T 6342 |
| Compression Set | ≤5% (25% compression, 70°C, 22h) | ASTM D395 |
| Operating Temperature | -40°C ~ +85°C | — |
| Flame Retardant Grade | HB (Standard); UL94-V0 Optional | UL94 |
| Adhesive Type | Conductive Acrylic Adhesive (Non-adhesive optional) | — |
| Regular Thickness | 0.3mm ~ 10mm, Customizable | — |
| Dimensional Tolerance | ≤10mm: ±0.2mm; 10~50mm: ±0.3mm | Die-cut Industry Standard |
| Environmental Compliance | RoHS, REACH | EU Environmental Directive |
Note: All values are typical. Foam hardness, plating layer and adhesive specifications can be customized per project requirements.
Customization: Specific grade selection and parameters can be customized to benchmark against customer requirements. Available options include silver-plated conductive foam, gold-plated conductive foam and natural graphite thermally conductive foam.
Application Fields
- Telecommunication Equipment — 5G base stations, servers, switches, routers, RF modules, EMI shielding and grounding for housing gaps.
- Consumer Electronics — laptops, all-in-one PCs, tablets, wearable devices, foldable screens, shielding gaskets for module frames.
- New Energy & Automotive Electronics — BMS battery management systems, automotive radars, domain controllers, central control modules, vehicle-grade shielding & cushioning.
- Industrial & Medical Electronics — industrial control cabinets, precision testing instruments, medical diagnostic equipment, isolation of external electromagnetic interference.
- Security & Test Fixtures — monitoring equipment, electromagnetic shielding test tool gaskets.
Selection Guide
- Thickness Selection — Select based on housing gap size. Recommended compression ratio: 25%~40% for optimal shielding performance.
- Adhesive — Conductive adhesive version is recommended (as shown in sample); non-adhesive version available for welding assembly.
- Flame Retardancy — UL94-V0 flame retardant version is suggested for power and telecommunication equipment.
- Working Environment — High temperature & salt resistance customized version available for automotive or heavy corrosive scenarios.
- Machining Form — Long strips, squares, rings and special-shaped die-cut parts supported, kiss-cut process available as shown in the picture.
Storage & Application Instructions
- Storage — Store in cool, dry and dark environment at 10~25°C; keep away from high temperature and high humidity.
- Shelf Life — 6 months for unopened original sealed package if release liner remains intact.
- Assembly — Keep substrate surface clean & dry before pasting. Press firmly and leave for 24 hours to reach maximum bonding strength.
- Caution — Do not wipe conductive foam surface with strong solvent, which may damage conductive coating and reduce shielding & conductive performance.
Quality Delivery
Certificate of Analysis (COA), RoHS report can be provided on delivery. UL flame retardant report available upon request. Sample testing, small-batch trial production and mass delivery are supported.
Send us your application details and we confirm the right grade, thickness and packaging in the quotation. Samples available within 3–7 days.>