The Problem We Solve

Your challenge

As devices pack antennas next to radios and fast digital boards, engineers fight crosstalk, spurious emissions and failed EMC tests — late in the project when changes are expensive.

↓ Our solution
ROTADIE solution

Die-cut conductive foam gaskets, shielding foils and I/O gasket assemblies engineered to your enclosure and seam geometry — with contact resistance and compression data to support your EMC design review.

Not sure which grade fits? Send us your application — our engineer replies with a selection proposal within 24 hours.

EMI Shielding Gaskets & Foils

EMI Shielding Gaskets & Foils

Die-cut EMI/EMC gaskets and shielding materials — electrically conductive foam, conductive fabric, copper/aluminum foil laminates — for enclosure sealing and board-level shielding.

Key Features

EMI gaskets are as much about mechanics as about conductivity: too stiff and the enclosure warps, too soft and the seam leaks. ROTADIE engineers the gasket cross-section against your screw pattern and seam gaps, then die-cuts with conductive paths uninterrupted — corners, via holes and fold-over flaps included.

EMI Shielding Gaskets & Foils

  • Electrically conductive foam (Ni/Cu plated) gaskets, low compression force, Conductive cloth & fabric-over-foam for narrow seam designs, Copper / aluminum foil die-cuts, single & double-sided conductive adhesive, Shielding can (frame + lid) die-cuts and custom forms, Contact resistance typically <0.05 Ω/inch, datasheets per grade, Combined EMI + environmental seal (dual function) designs available

Typical Applications

  • Smartphone & tablet chassis seam gaskets, TWS earphone antenna isolation, Router / CPE enclosure I/O gaskets, Automotive radar and ECU shielding, Medical monitor EMC sealing, Board-level shield can assemblies

Technical Specifications

Material typesConductive foam, conductive cloth, Cu/Al foil
Shielding effectiveness60 – 100 dB (10 MHz – 3 GHz, per grade)
Contact resistance<0.05 Ω/in typical
Compression forceLow / standard grades
Thickness range0.1 – 5.0 mm
Temperature range-40°C to +120°C (gasket grades)
AdhesiveConductive / non-conductive options
MOQ1 prototype run

Specification values are typical reference values. Final values are subject to the grade datasheet and test report.

How to Order

① Define the application — describe the device, the function of the part and the environment it works in.

② Send the drawing — DXF / PDF / STEP, or a dimensioned sketch with tolerances marked.

③ Confirm quantities — prototype quantity and estimated annual volume.

④ Review the proposal — we reply with material options, unit price and tooling cost within 24 hours.

⑤ Sample & validate — typical parts sampled in 3–5 working days (quoted per drawing), then mass production after your approval.

Documents

DataSheet

Full specifications & ordering info

Request document →

RoHS Compliance Report

Environmental compliance report

Request document →

FTIR Material Report

Material & performance test report

Request document →

FAQ

1. What information do you need to quote my die-cut part?
Three things: (1) a drawing — DXF, PDF or STEP, even a dimensioned sketch works; (2) the material requirement, or simply the application and environment so we can propose; (3) estimated annual quantity. Every drawing is reviewed by an engineer before quoting, and we return a material proposal, unit price and tooling cost within 24 hours.
2. How fast can I get samples?
Sampling lead time depends on part complexity and is quoted together with your quotation. Typical parts are sampled in 3–5 working days after drawing confirmation; parts requiring special material sourcing or multi-layer lamination take longer. The lead time for your specific part is confirmed before you commit — no vague promises.
3. What is your minimum order quantity?
For prototype and validation runs we accept single-run quantities — you do not need to commit to mass production to test our quality. For mass production, MOQ depends on material and part size; small-quantity production runs are supported with per-unit pricing clearly shown.
4. Do I pay for tooling? Is it reusable?
Custom parts require a die tool, quoted as a one-time cost shown separately on the quotation. The tool stays reserved for your part — repeat orders have no tooling charge. For simple shapes we may use etched or laser cutting with lower or zero tooling cost.
5. How do you control quality?
Three stages: incoming material inspection (thickness, adhesive, certs), in-process inspection during die-cutting, and 100% outgoing inspection before packing. Dimension inspection reports and material certificates are supplied with shipment on request.
6. Which material brands do you convert?
We routinely convert 3M, Nitto Denko, tesa, PORON-class urethane foams, Kapton-class PI films and NOMEX-class aramid papers, plus qualified domestic equivalents when cost matters. All material declarations (RoHS / REACH) are supplied with shipment.
7. Can you ship internationally?
Yes. We ship worldwide from Shenzhen by international express (DHL/FedEx/UPS) for samples and small runs, and by air or sea freight for mass production. Export-standard packing with humidity protection is standard.
8. Can you help if I only know the application, not the exact material?
Yes — that is the normal case. Describe the device, the function the part must perform (seal, bond, shield, insulate, protect), the environment, and any constraints (thickness, temperature, approvals). Our engineer proposes 2–3 material options with trade-offs, and sampling validates the choice before you commit.

Contact Us

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Further Reading

EMI Shielding Gasket Design: Seam Gaps, Compression and Contact Resistance
EMI Shielding2026-11-12

EMI Shielding Gasket Design: Seam Gaps, Compression and Contact Resistance

A board-level and enclosure-level design guide for EMI gaskets: how seam geometry, compression force and contact resistance determine whether your EMC test passes.

Need samples or a selection proposal for this part?

Engineer reply within 48 hours — free sampling support.

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