What This Cover Seals and Where It Goes
The TE Connectivity 208652-1 is a sealing cover for the CPC (Circular Plastic Connector) series, shell size 17. It's a protective cap — not a connector half — designed to seal the mating face of a CPC receptacle when the plug is disconnected. The black thermoplastic body carries a metal chain that tethers the cover to the panel or cable assembly, so it doesn't wander off during field service. This cover fits CPC Receptacle Series 1, 2, and 3 — the three main generations of TE's circular plastic receptacles. Shell size 17 is the body diameter class; if you're working with a CPC receptacle that takes a size 17 shell, this cap will seal it. The sealing function keeps dust, debris, and moisture out of the unplugged receptacle contacts.
Fit Check — Shell Size and Series Compatibility
The critical dimension is shell size 17. CPC receptacles are grouped by shell size — 11, 13, 17, 23 — and the cover must match the receptacle's shell size exactly. A size 17 cover will not seal a size 13 or 23 receptacle. The cross-series compatibility (Series 1, 2, and 3) means this single cover works across multiple design generations of the same shell size, so you don't need to track which revision the receptacle is.