18in Electropolished Feedthrough Collar (8 CF Ports)

The FCO‑1800‑8‑EP is a high-performance feedthrough collar engineered for use with 18″ vacuum bell jars and baseplates. It features eight 2.75″ CF ports, a 20″ dovetail‑grooved base flange, and is precision-machined from 304 stainless steel with an electropolished finish. Each collar includes a standard FKM (Viton®) O‑ring, offering vacuum integrity to ~1×10⁻⁸ mbar and operating from −20 °C to 200 °C. Compatible with Nor-Cal’s modular vacuum components, it is ideal for R&D, semiconductor, and high‑vacuum system integration.