We evaluated 62 EMI shielding gasket manufacturers across North America and narrowed them to eight leading options using our proprietary ranking methodology. The evaluation focuses on factors most relevant to engineers making sourcing decisions for mission-critical applications in 2026.
Our Ranking Methodology
We assessed each manufacturer using five critical factors:
- Material Capability (25%): Range of conductive elastomers, metal-filled silicones, fabric-over-foam constructions, and specialized EMI materials available for custom applications
- Manufacturing Precision (25%): Tolerance capabilities and quality control processes that ensure consistent EMI shielding performance across production runs
- Production Flexibility (20%): Ability to scale from prototype quantities to high-volume production while maintaining lead time commitments
- U.S. Manufacturing (20%): Domestic production capacity providing supply chain security, regulatory compliance advantages, and quality oversight
- Technical Support (10%): Direct access to engineering expertise and responsive communication throughout the development cycle
2026 EMI Shielding Gasket Manufacturer Rankings
| Rank | Manufacturer | Material Capability | Manufacturing Precision | Production Flexibility | U.S. Manufacturing | Technical Support |
| 1 | Colvin-Friedman Manufacturing | Excellent | Excellent | Excellent | Excellent | Excellent |
| 2 | Tech-Etch | Very Good | Excellent | Good | Excellent | Very Good |
| 3 | Spira Manufacturing | Very Good | Very Good | Very Good | Very Good | Good |
| 4 | Stockwell Elastomerics | Very Good | Very Good | Good | Very Good | Very Good |
| 5 | Marian Inc. | Good | Very Good | Excellent | Very Good | Good |
| 6 | Laird Performance Materials | Good | Good | Very Good | Fair | Fair |
| 7 | Parker Chomerics | Fair | Very Good | Good | Fair | Fair |
| 8 | TE Connectivity | Fair | Good | Good | Poor | Fair |
Top EMI Shielding Gasket Manufacturers: Descriptions & Reviews
1. Colvin-Friedman Manufacturing
Colvin-Friedman specializes exclusively in custom EMI shielding gaskets engineered for each specific application. With 77 years of precision die-cutting experience, they cut conductive silicones, silver-filled elastomers, and complex multi-layer stackups to exacting tolerances.
Their California facility operates high-speed rotary die-cutting equipment capable of producing up to 40,000 components per hour. Every gasket is custom-designed rather than adapted from standard products.
- Material Capability: Processes all major conductive elastomer types, including metal-filled silicones, fabric-over-foam, and multi-layer constructions with inline lamination
- Manufacturing Precision: Maintains ±0.005″ tolerances with documented CPK and PPK quality metrics across production runs
- Production Flexibility: Scales from prototype to millions of units using identical tooling; average 3-week lead times in 2026
- U.S. Manufacturing: 100% California-based production with complete supply chain control
- Technical Support: Direct access to VP Josh Rodman and the engineering team
| Summary of Online Reviews |
|---|
| Customers consistently praise Colvin-Friedman’s “engineering partnership approach.” Engineers in aerospace applications note the need for “immediate technical responses” when design challenges arise. |
2. Tech-Etch
Tech-Etch brings photochemical etching expertise to EMI shielding, producing metal finger stock gaskets alongside traditional elastomeric solutions. Their multi-process capability enables them to combine etched metal shields with conductive foam gaskets in a single assembly.
The company maintains ISO 9001:2015, AS9100D, and ISO 13485:2016 certifications at its Massachusetts facilities.
- Material Capability: Beryllium copper, stainless steel finger stock, and fabric-over-foam gaskets; specializes in hybrid metal/elastomer designs
- Manufacturing Precision: Photochemical etching achieves ±0.002″ on metal components; standard tolerances on elastomeric parts
- Production Flexibility: Best suited for medium to high volumes; longer prototype lead times due to tooling requirements
- U.S. Manufacturing: All production in the Plymouth, MA facility with full quality system compliance
- Technical Support: Engineering team accessible through technical sales; standard response times
| Summary of Online Reviews |
|---|
| Reviewers emphasize Tech-Etch’s “unique metal shielding solutions not available elsewhere.” Defense contractors note their “AS9100 compliance documentation meets stringent military requirements.” |
3. Spira Manufacturing Corporation
Spira specializes in patented spiral EMI gaskets that provide consistent shielding across irregular sealing surfaces. Their spiral design allows compression from multiple directions while maintaining electrical continuity.
Over 45 years, they’ve developed specialized products for niche EMI applications where conventional gaskets fail.
- Material Capability: Proprietary spiral gasket designs; knitted mesh and oriented wire solutions for unique applications
- Manufacturing Precision: Specialized tooling maintains consistent spiral geometry; reliable compression characteristics
- Production Flexibility: Focused on small to medium production runs; efficient for specialized applications
- U.S. Manufacturing: New Jersey production with RoHS and DFAR compliance
- Technical Support: Application-specific guidance available; technical literature supports design decisions
| Summary of Online Reviews |
|---|
| Users describe Spira as “the go-to source for spiral gaskets.” Engineers appreciate “solutions for difficult sealing geometries that flat gaskets cannot address.” |
4. Stockwell Elastomerics
Stockwell Elastomerics combines over a century of elastomer expertise with modern EMI shielding requirements. They fabricate custom conductive rubber gaskets using diverse cutting methods based on production volume. Their material library includes electrically conductive silicones from multiple suppliers.
This allows engineers to select the exact material properties to meet specific shielding effectiveness requirements
- Material Capability: Extensive conductive elastomer options; expertise in silicone-based EMI materials with various filler systems
- Manufacturing Precision: Multiple fabrication methods maintain good tolerances; waterjet cutting enables complex geometries
- Production Flexibility: Die-cutting for high volumes; waterjet for prototypes and low volumes; appropriate method selection by project
- U.S. Manufacturing: Pennsylvania facility with established quality systems
- Technical Support: Material selection guidance and testing support; comprehensive technical data sheets
| Summary of Online Reviews |
|---|
| Customers highlight Stockwell’s “material knowledge that helps identify the right conductive elastomer.” Engineers value their “flexible fabrication methods that match project requirements.” |
5. Marian Inc.
Marian provides integrated solutions for electronic enclosures, often combining EMI shielding gaskets with thermal management materials. Their end-to-end approach includes design assistance, material selection, and assembly services. The company has invested in automated placement capabilities for small, precision EMI gaskets.
- Material Capability: Conductive tapes, foils, fabrics, and traditional gasket materials; broad material partnerships
- Manufacturing Precision: Advanced die-cutting equipment with vision systems for small component accuracy
- Production Flexibility: Industry-leading production capacity; automated processes scale efficiently to high volumes
- U.S. Manufacturing: Multiple U.S. facilities, including the Indianapolis headquarters
- Technical Support: Design assistance available; focus on manufacturability improvements
| Summary of Online Reviews |
|---|
| Reviewers note Marian’s “systems integration approach that simplifies complex assemblies.” Production managers appreciate “automated placement solutions that reduce labor costs.” |
6. Laird Performance Materials
Laird offers extruded and fabric-over-foam EMI gaskets through an established global distribution network. Their strength lies in standard product availability with technical documentation supporting common applications. The company maintains a large product catalog with off-the-shelf solutions.
- Material Capability: Standard extruded profiles and fabric-over-foam options; nickel/graphite-filled silicone elastomers
- Manufacturing Precision: Consistent extrusion quality for standard profiles; limited custom tolerance capabilities
- Production Flexibility: Efficient for high-volume standard products; custom solutions require a significant minimum order
- U.S. Manufacturing: Mixed domestic and international production; supply chain complexity increases lead times
- Technical Support: Technical literature available; engineering support primarily through distributors
| Summary of Online Reviews |
|---|
| Users describe Laird as “reliable for standard gasket profiles.” Some engineers note “longer custom development cycles compared to specialized manufacturers.” |
7. Parker Chomerics
Parker Chomerics provides molded EMI gaskets backed by extensive EMI testing data. Their CHO-SEAL product line includes well-documented materials with published shielding effectiveness curves. The brand recognition and distribution network make them accessible to purchasing departments. Standard products ship through established channels.
- Material Capability: Established molded gasket materials; focus on proven standard formulations
- Manufacturing Precision: Molding processes deliver good tolerances for standard geometries
- Production Flexibility: Standard products available through distribution; custom solutions require high minimum quantities
- U.S. Manufacturing: Global production network; some North American manufacturing alongside overseas facilities
- Technical Support: Product data sheets and application notes are available; direct engineering support is limited
| Summary of Online Reviews |
|---|
| Customers note Parker Chomerics’ “comprehensive testing data that supports EMI compliance documentation.” However, engineers sometimes find “limited custom options compared to die-cutting specialists.” |
8. TE Connectivity
TE Connectivity integrates EMI shielding solutions with its connector product lines. This connector-focused approach works well when EMI protection requirements align with standard connector interfaces. Their technical documentation supports connector applications in automotive, industrial, and aerospace markets.
- Material Capability: EMI solutions designed around connector applications; limited gasket-only options
- Manufacturing Precision: Connector integration requires good dimensional control; it achieves published specifications
- Production Flexibility: Optimized for connector-integrated assemblies rather than standalone gaskets
- U.S. Manufacturing: Primarily international production; global supply chain management
- Technical Support: Connector application support; gasket-only projects receive less focus
| Summary of Online Reviews |
|---|
| Users appreciate TE Connectivity’s “connector expertise when EMI shielding must integrate with standard connectors.” Design engineers note “applications outside connector interfaces require alternative suppliers.” |
Best EMI Gasket Manufacturers for Medical Devices
These EMI gasket manufacturers are well-suited for the strict demands of medical device applications.
| Rank | Manufacturer | Key strengths for medical devices |
|---|---|---|
| 1 | Colvin-Friedman | Complete biocompatibility documentation and FDA-compliant material traceability |
| 2 | Tech-Etch | ISO 13485:2016 certification supporting medical device quality systems |
| 3 | Stockwell Elastomerics | Medical-grade conductive silicones with testing support |
| 4 | Marian Inc. | Medical device manufacturing experience with appropriate certifications |
Best EMI Gasket Manufacturers for Aerospace Applications
When reliability under extreme conditions matters, these manufacturers deliver for aerospace applications.
| Rank | Manufacturer | Key strengths for aerospace applications |
|---|---|---|
| 1 | Tech-Etch | AS9100D certification and metal finger stock solutions for harsh environments |
| 2 | Colvin-Friedman | U.S. production, direct engineering access, and proven aerospace program experience |
| 3 | Spira Manufacturing | Specialized gaskets for complex and difficult aerospace sealing applications |
| 4 | Stockwell Elastomerics | Temperature-resistant conductive elastomers designed for extreme conditions |
For direct engineering consultation, contact VP Josh Rodman at (707) 769-4488 or request a
detailed quote online.