emi shield foam gasket emi gasket

EMI foam is a high-performance, flexible shielding material engineered to block electromagnetic interference (EMI) and radio frequency interference (RFI). Blending conductive metals (such as copper, nickel, or silver) with resilient foam substrates like polyurethane or silicone, it delivers superior shielding effectiveness while offering excellent compression recovery and conformability.

This foam creates a reliable conductive barrier that safeguards sensitive components from external interference and prevents internal signal leakage. Its lightweight design, corrosion resistance, and easy installation make it a go-to solution for compact, high-tech applications where both shielding performance and space efficiency matter.

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2. Superior conformability and gap-filling capability
3.   EMI foam is based on flexible foam substrates (polyurethane, silicone, etc.). It can be easily compressed to fit irregular surfaces, seams, and tiny gaps that rigid metal sheets or hard gaskets cannot seal tightly. This ensures a continuous conductive barrier, eliminating shielding "leakage points" that often occur with rigid materials.
4. Lightweight and space-saving
5.   Traditional metal shielding components add significant weight and volume to devices. EMI foam is ultra-light and thin, making it ideal for miniaturized electronics (such as smartphones, wearable devices, and aerospace sensors) where weight and space constraints are critical. It does not increase the overall burden of the product while maintaining shielding effectiveness.
6. Excellent compression recovery and durability
7.   Unlike conductive cloth (which is prone to wear and tear after repeated assembly/disassembly) or metal mesh (which can deform permanently), EMI foam retains its shape and conductivity even after multiple compressions. This extends the service life of the shielding structure and reduces maintenance costs.
8. Integrated multi-functional protection
9.   Many EMI foam products are designed with additional properties: they can act as dust seals, moisture barriers, and even vibration dampeners at the same time. Traditional shielding materials usually only provide a single EMI/RFI blocking function, requiring additional components to achieve sealing or shock absorption.
10. Easy to install and process
11.   EMI foam can be die-cut into custom shapes (circles, strips, irregular contours) to match specific device structures. It can be installed with adhesive backing without the need for complex fasteners (screws, clips) required for metal shielding parts, which simplifies the assembly process and improves production efficiency.

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Lanxin's insulation materials quality is 100% according to ISO9001 Standard. We seriously take care of the quality control from IQC to OQC, throughout each step of the production.

Q1: How soon can I get a precise quotation for custom die cutting insulated materials ?

A1: Please send us your inquiry by email or phone call. Once we confirm the design (Feature details with parameters), material, color, qty, we can provide quotation within 24 HOURS.

Q2: Can I get a free sample, how long will it take?

A2: a. For standard products we have in stock, YES for free sample, but the express fee will be charged in advance. Mostly, it takes 3-10 days.

b. For custom products, sample fee is determined by the detailed sample requirements. Normally, it takes 7-15 days.

Q3: Can you make custom parts based on my sample?
A3: Yes, you can send the sample to us by express and we will evaluate the sample, scan the features and draft 3D drawing for production.