Double Flanged Eyelets

Ceramic double flanged eyelets provide a stable, insulated passage for conductors, leads, or mechanical elements that must pass through a barrier or housing. The dual flange geometry supports secure seating on both sides of a panel, while the ceramic body maintains electrical isolation and dimensional consistency in demanding environments. These components are used in assemblies where alignment, thermal stability, and long term material performance are required.

The eyelets on this page are organized by dimensional attributes to support fast selection during design, prototyping, and procurement. Segmenting by size allows engineers to match eyelets to conductor diameters, housing openings, and joining processes without relying on part number order.

Functional Role in Assemblies

Double flanged eyelets are used when a conductor or mechanical pin must pass through a wall while maintaining insulation, mechanical alignment, and separation between internal and external environments. The ceramic construction supports stable performance during soldering, brazing, or high temperature operation. The dual flange design reduces axial movement, distributes load, and provides consistent seating during assembly.

These components are commonly used in sensor housings, power electronics, vacuum devices, RF enclosures, aerospace hardware, and medical instrumentation. Their geometry and material behavior make them suitable for assemblies that require repeatable alignment and long term dimensional stability.

Material and Construction Characteristics

Ceramic double flanged eyelets are typically manufactured from alumina or comparable technical ceramics. These materials offer:

• High dielectric strength
• Low electrical loss
• Stable performance at elevated temperatures
• Wear resistance
• Chemical inertness
• Low thermal expansion relative to metals

These characteristics support reliable operation in assemblies exposed to heat, vibration, or corrosive environments. The ceramic body maintains its shape and insulating properties during brazing, soldering, or mechanical fastening.

Applications and Use Cases

Ceramic double flanged eyelets are selected for assemblies that require:

• Electrical isolation between conductors and housings
• Stable alignment of pins or leads
• Resistance to heat, abrasion, or corrosive environments
• Compatibility with brazing or metallization
• Long term dimensional stability under thermal cycling

Typical applications include hermetic feedthroughs, high temperature sensors, power modules, vacuum systems, and high frequency electronics. Their geometry supports consistent performance in environments where polymers or metals may deform or degrade.

FAQ

What Determines Compatibility Between an Eyelet and a Conductor?

Compatibility is based on the through hole diameter relative to the conductor size. The conductor must fit without excessive clearance, and the wall thickness must support the required electrical spacing and mechanical stability.

How Do the Two Flanges Improve Performance in an Assembly?

The dual flange geometry provides retention on both sides of a panel, reducing axial movement and creating stable seating surfaces for brazing, adhesives, or mechanical fastening.

Why Are Ceramic Materials Used for Double Flanged Eyelets?

Ceramic materials offer electrical insulation, thermal stability, and wear resistance. These properties support consistent behavior during high temperature joining processes and long term operation in demanding environments.

Which Dimensions Are Most Important During Selection?

Through hole diameter, body diameter, and flange diameter are typically the primary selection factors. These dimensions determine conductor fit, panel compatibility, and the available seating area for joining or retention.