Emi Gasket enclosure
When an assembly needs reliable EMI shielding and environmental sealing—without turning into a tolerance nightmare—CHO-SEAL® 1215 is one of the go-to materials engineers reach for. It’s a conductive elastomer gasket material designed to create an electrically continuous seal between mating surfaces, helping control electromagnetic interference while also maintaining a robust physical seal.
At New England Die Cutting (NEDC), we regularly convert CHO-SEAL 1215 into production-ready gaskets using steel rule die cutting or waterjet cutting, depending on geometry, tolerances, quantities, and lead-time requirements.
What is CHO-SEAL 1215?
CHO-SEAL 1215 is a conductive elastomer gasket material commonly used for:
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Grounding continuity between enclosures
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Environmental sealing where a conductive seal is required
It’s typically selected when you need a gasket that:
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Maintains conductive contact under compression
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Conforms to surfaces and compensates for minor flange variation
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Performs reliably over time in demanding electronic and electromechanical assemblies
How NEDC Converts CHO-SEAL 1215: Die Cutting vs. Waterjet Cutting
Different parts call for different conversion methods. The good news: CHO-SEAL 1215 converts cleanly with both waterjet and die cutting, and NEDC supports either route.
Option 1: Die Cutting (Best for Production Volumes)
Die cutting is usually the best fit when:
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You have repeat orders
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You want the lowest cost per part at scale
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The gasket design is stable (or at least stable per revision)
Why customers like die cutting for 1215:
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Fast cycle times
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Excellent repeatability for standard geometries
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Strong economics once the tool is built
Option 2: Waterjet Cutting (Best for Prototypes + Quick Turns)
Waterjet cutting is a great fit when:
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You need prototypes or pre-production builds
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You’re still iterating on hole locations, connector cutouts, or edge geometry
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You want to avoid tool lead time
Why customers like waterjet for 1215:
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No hard tooling required
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Great for complex shapes and internal features
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Easy to revise and re-run without waiting on a new die
At NEDC, we’ll often recommend waterjet for early builds, then transition to a die-cut solution for production once the design is locked.
Sheet Sizes, Nomenclature for Cho-Seal 1215
40-10-1020-1215 (.020”), 40-20-1020-1215 (.032”), 40-30-1020-1215 (.062”), 40-40-1020-1215 (.093”), 40-50-1020-1215 (.125”), 40-60-1020-1215 (.045”). Adding a -40 to any of these sheet sizes will make it certified to the MIL-DTL-83528 Type A material.
Common Applications for CHO-SEAL 1215
CHO-SEAL 1215 shows up anywhere electrical continuity at the gasket line matters. Typical use cases include:
Shielded Electronic Enclosures
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Avionics and aerospace electronics boxes
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Industrial controls
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Test equipment housings
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Ruggedized communications enclosures
It helps ensure mating surfaces maintain shielding effectiveness across the enclosure seam.
Access Panels, Covers, and Lid Seals
For assemblies that require periodic service access (panel removal, cover replacement), CHO-SEAL 1215 can provide a conductive seal that holds up across repeated compression cycles—especially when paired with proper fastener patterns and compression control.
Connector Interfaces and Grounding Paths
When a system needs a consistent conductive path around connectors or interface boundaries, CHO-SEAL 1215 is often used as a gasket/grounding element to help manage leakage points that compromise shielding.
Aerospace, Defense, and High-Reliability Electronics
This is where conductive gaskets earn their keep: weight, packaging, and performance constraints are tight, and sealing + shielding failures are expensive. NEDC supports these applications with controlled conversion processes and consistent repeatability.
Why Customers Source CHO-SEAL 1215 Converting Through NEDC
When you buy CHO-SEAL 1215 as raw sheet/strip, the real challenge is turning it into a gasket that:
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Fits the flange correctly
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Holds tolerances where it matters
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Is produced consistently across builds and revisions
NEDC helps by providing:
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Waterjet and die cutting under one roof (prototype-to-production)
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Support for custom shapes, holes, cutouts, and multi-feature gaskets
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Repeatable conversion aligned to aerospace/industrial expectations
If you have a print, DXF, or even a physical sample, we can help you choose the right cutting method and build a conversion plan that matches your volume and schedule.
Request a Quote for CHO-SEAL 1215 Gaskets
Need CHO-SEAL 1215 converted into a finished gasket set? NEDC can support everything from one-off prototypes to repeat production.
Send us your:
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PDF drawing and/or DXF
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Quantity and annual usage
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Any critical dimensions or sealing notes
…and we’ll recommend the best conversion method (waterjet vs. die cut) and turn it into a clean, manufacturable part.