Bellows-Compensated Flanged Hermetic Feed-Through Connector

Bellows-Compensated Flanged Hermetic Feed-Through Connector

This connector combines three structural features in one body: a flange, a bellows compensation section and a feed-through format. The flange provides a flat mounting interface for fixing the connector to a panel or cavity wall and sets the alignment reference. The feed-through format lets the connector cross a wall and keep an electrical path on both sides. The bellows is the corrugated element along the axis: it absorbs limited axial and angular deviation during assembly or in service, keeping that displacement away from the glass-to-metal sintered seal instead of loading it.

Because the bellows is sensitive to forming process and wall thickness uniformity, it is treated as a process-critical part. Sealing runs on tube furnaces, chain sintering furnaces and chain oxidation furnaces; after forming, parts are checked for appearance and dimensions on projectors and high-magnification microscopes; and the relative position between flange face and bellows section is controlled during machining. Helium mass-spectrometer leak detection, insulation resistance and withstand voltage testing, plating thickness measurement and high-low temperature testing cover the finished assembly. Kovar, stainless steel, titanium, aluminium, nickel-based alloy and oxygen-free copper are available, with nickel/gold plating and machining in-house.

Production runs on five metal-glass sealing lines under ISO9001:2015 and GJB9001C-2017, backed by more than fifty national patents. Typical uses are sealed connection points in aerospace, aviation, shipboard, radar, ordnance, medical, instrumentation and communication equipment, manufactured in Bengbu, Anhui.

For other feed-through forms in the same series, refer to our Sealed Connector Plug Series; for sensor-side mating parts, refer to our Sensor Base Solutions.