HeaderMate EHL Electrical Header Test Tool
Leak test connector engineered for non-circular electrical header geometries.
- Leak-tight sealing of the entire header perimeter, including small radius corners.
- Proprietary molded seal designed for reliable sealing and non-marring of electrical header.
- Tapered nose provides easy and accurate connection.
- Lever actuation for manual processes or pneumatic actuation for automated processes.
- Available with ICON intelligent connection technology, supports process automation by enabling safety interlocks, real-time data collection and “good/bad” connection feedback.
EHL Data Sheet: Click Here
EHL Operating and Rebuild Instructions: Click Here
Product Video: Watch Here
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The Purpose-Built Electrical Header Connector for Automotive and EV Leak Testing
The FasTest HeaderMate EHL is a purpose-built electrical header connector designed to solve one of the most challenging sealing problems in automotive and EV manufacturing: reliably leak testing non-circular electrical header geometries. Automotive and EV electrical connectors come in rectangular, oval, D-shaped, and irregularly shaped housings that standard round connectors simply cannot seal. The EHL was engineered specifically for these geometries.
Unlike generic test fixtures or improvised clamp-and-gasket solutions, the HeaderMate EHL uses a proprietary molded seal designed to conform to the exact perimeter of the electrical header—including tight-radius corners where leaks are most likely to occur and most difficult to detect. The tapered nose guides the electrical header connector onto the part with precise alignment, and the lever or pneumatic actuation engages the seal uniformly around the entire perimeter for a consistent, leak-tight connection every cycle.
The result is an electrical header connector that seals reliably on non-circular geometries, does not mar or damage the header surface, and delivers the repeatable performance that high-volume automotive and EV electrical testing requires. Available with ICON™ intelligent connection technology for automated test stations, the EHL provides SURE SEAL™ seal verification, safety interlocks, and real-time connection data for PLC-integrated test sequences.
Why Non-Circular Electrical Headers Are So Difficult to Leak Test
Electrical headers on automotive and EV connectors are not circular. They’re rectangular, oblong, D-shaped, or irregularly contoured—with tight-radius corners, thin walls, and delicate sealing surfaces. This creates a fundamental problem for production leak testing:
Round connectors don’t fit: Standard round connectors and O-ring seals cannot conform to rectangular or irregular perimeters. They either don’t seal at all, or they seal unevenly—leaking at the corners while sealing on the straight sections.
Improvised fixtures leak at corners: Many manufacturers resort to flat gaskets held in place with clamp fixtures. These improvised setups are inconsistent, operator-dependent, and prone to false failures—especially at the small-radius corners where the gasket bunches or lifts.
Delicate surfaces are easily damaged: Electrical headers are typically molded plastic with delicate sealing surfaces. Excessive clamping force deforms the housing; insufficient force leaves leak paths. In-house fixtures rarely achieve the right balance consistently.
High quality stakes: Electrical connector environmental sealing is a critical quality gate—moisture intrusion into a wiring harness connector can cause electrical failures, corrosion, and warranty claims. Test tooling variability introduces risk that has nothing to do with the actual product quality.
The HeaderMate EHL was designed from the ground up as a purpose-built electrical header connector that solves each of these challenges with an engineered approach rather than an improvised one.
Technical Specifications
| Specification | Detail |
|---|---|
| Product Type | Electrical header connector for non-circular header leak testing |
| Connects To | Non-circular electrical headers: rectangular, oblong, D-shaped, and irregularly contoured electrical connector housings |
| Seal Type | Proprietary molded seal designed for full-perimeter sealing including tight-radius corners. Non-marring material protects header surface. |
| Max Pressure Rating | Vacuum to 1 psi (application-dependent). Designed for the low-pressure, high-sensitivity environmental seal testing typical of electrical headers. |
| Actuation Methods | Lever actuation (manual) or pneumatic actuation (automated). Both provide consistent seal engagement. |
| ICON™ Availability | Available with ICON™ intelligent connection technology: SURE SEAL™ verification, safety interlocks, real-time data, PLC integration. |
| Alignment | Tapered nose provides self-centering guidance for easy, accurate connection to non-circular header geometries. |
| Target Industries | Automotive (ICE and EV), vehicle electrical systems, wire harness manufacturing, electrical connector manufacturing. |
| Typical Applications | Environmental seal testing of electrical connector headers, IP-rating validation, moisture intrusion testing, wire harness connector leak testing. |
| Custom Configuration | EHL is custom-configured for each specific header geometry. Contact FasTest with header drawings for a recommendation. |
| Documentation | Datasheet, operating and rebuild instructions available for download. |
Where the HeaderMate EHL Electrical Header Connector Is Used
EV High-Voltage Connector Testing
Electric vehicle high-voltage electrical connectors—battery pack connectors, inverter headers, motor controller interfaces, charging system connectors—must pass environmental seal testing to verify IP-rated protection against moisture and contaminant intrusion. These connectors often have large, non-circular header geometries that standard round test connectors cannot seal. The HeaderMate EHL provides the purpose-built electrical header connector these applications require, with ICON™ available for the automated test stations common in EV manufacturing.
Low-Voltage Automotive Connector Testing
Low-voltage vehicle wiring harness connectors, ECU headers, sensor connectors, and body control module interfaces also require environmental seal verification—particularly for connectors in engine compartments, underbody locations, and exterior positions where water and debris exposure is a concern. The EHL seals to the non-circular headers typical of these multi-pin automotive connectors, with the non-marring seal protecting delicate molded plastic housings.
Wire Harness Manufacturing
Wire harness manufacturers who assemble terminated connectors into complete harness assemblies often perform environmental leak testing at the connector header as a quality gate before shipping to the OEM. The EHL provides a production-grade electrical header connector that delivers consistent results across high-volume harness production, with lever actuation for manual stations and pneumatic actuation for automated test cells.
Electrical Connector Manufacturing
Connector manufacturers producing housings and assembled connectors for automotive, EV, and industrial applications need to verify that the molded housing provides a proper environmental seal before the connector leaves the factory. The EHL tests the header seal integrity at the component level, catching seal defects before the connector is integrated into a harness or vehicle.
HeaderMate EHL vs. In-House Fixtures
Why Engineers Replace In-House Fixtures with a Purpose-Built Electrical Header Connector
Many manufacturers initially attempt to test non-circular electrical headers with in-house fixtures—typically a flat gasket on a clamped plate. Here’s how that approach compares to the HeaderMate EHL:
| In-House Fixture | HeaderMate EHL | |
|---|---|---|
| Corner Sealing | Gaskets bunch or lift at corners — inconsistent | Molded seal conforms to full perimeter including tight-radius corners |
| Surface Damage | Clamp force can deform plastic headers | Non-marring seal designed for delicate header surfaces |
| Alignment | Manual alignment, operator-dependent | Self-centering tapered nose for accurate, repeatable alignment |
| Consistency | Varies by operator, gasket condition, and clamp pressure | Engineered seal delivers consistent results every cycle |
| False Failures | High — corner leaks are common | Low — full-perimeter seal with SURE SEAL™ confirmation |
| Automation | Difficult to automate consistently | Pneumatic actuation with ICON™ for PLC-integrated testing |
| Maintenance | Gaskets degrade unevenly, difficult to replace | Documented seal replacement procedure and parts availability |
| Cycle Time | Slow — manual alignment, clamping, verification | Fast — tapered alignment, lever or pneumatic actuation |
Frequently Asked Questions
Q: What is the HeaderMate EHL?
A: The HeaderMate EHL is a purpose-built electrical header connector from FasTest designed for leak testing non-circular electrical header geometries. It uses a proprietary molded seal that conforms to rectangular, oblong, D-shaped, and irregularly contoured electrical connector headers—including tight-radius corners—to deliver reliable, full-perimeter environmental seal testing.
Q: What is an electrical header connector?
A: An electrical header connector in the context of leak testing is a specialized test connector designed to seal onto the face of an electrical connector housing (the “header”) for environmental seal verification. The FasTest HeaderMate EHL is an electrical header connector purpose-built for the non-circular geometries typical of automotive and EV electrical connector headers.
Q: What header shapes can the EHL seal?
A: The EHL is designed for non-circular header geometries: rectangular, oblong, D-shaped, trapezoidal, and other irregular shapes found on automotive and EV electrical connectors. Each EHL is custom-configured with a molded seal matched to the specific header geometry of the connector being tested.
Q: What pressure range does the EHL operate at?
A: The EHL operates from vacuum to approximately 1 psi, depending on the application. This low-pressure range is typical for electrical header environmental seal testing (IP-rating verification, moisture intrusion testing), which detects very small leaks at low differential pressures.
Q: Is the EHL available with ICON™ technology?
A: Yes. The HeaderMate EHL is available with ICON™ intelligent connection technology, providing SURE SEAL™ digital seal verification, safety interlocks, and real-time connection data for PLC-integrated automated test stations. This makes the EHL suitable for both manual and automated electrical header testing.
Q: Can the EHL be used on automated test stations?
A: Yes. The pneumatically actuated version of the EHL is designed for automated and semi-automated test stations. With ICON™, it provides the digital seal confirmation signals needed for PLC-controlled test sequences, including safety interlocks that prevent testing before the electrical header connector has achieved a verified seal.
Q: Does the EHL damage the electrical header surface?
A: No. The EHL uses a proprietary non-marring molded seal specifically designed to seal reliably without scratching, deforming, or marking the electrical header surface. This is critical for molded plastic connector housings where surface damage to the seal area would compromise the environmental seal in the final assembly.
Q: How is the EHL configured for my specific header geometry?
A: Each EHL is custom-configured for the specific electrical header geometry being tested. Contact FasTest with your connector header drawings (or submit an Application Evaluation), and our engineers will design the molded seal profile and connector configuration matched to your header shape.
Q: What industries use the HeaderMate EHL?
A: The HeaderMate EHL is primarily used in automotive and EV manufacturing for testing electrical connector environmental seals. Applications include high-voltage EV connector testing (battery, inverter, motor), low-voltage automotive connector testing (ECU, sensor, body control), wire harness manufacturing, and electrical connector component manufacturing.
Q: How does the EHL compare to using a flat gasket and clamp fixture?
A: The EHL provides dramatically better corner sealing (the molded seal conforms to tight-radius corners where flat gaskets fail), non-marring surface contact (clamps can deform plastic headers), self-centering alignment (versus manual positioning), and consistent results across operators and shifts. ICON™ availability adds digital seal verification and automation integration that clamp fixtures cannot provide.