What This Cover Fits and Why It Matters
The TE Connectivity 1604089-2 is a black elastomer cap (cover) for the Miniature CPC connector family, shell size 11. It snaps over the mating face of a CPC plug or receptacle to keep dust, swarf, and shop-floor debris out of the contact cavity when the connector is unmated. The elastomer material gives it a flexible seal lip that conforms to the shell — it's not a hard plastic cap that rattles off. If you're building or servicing a harness that sees intermittent disconnection, this cover saves you from chasing contamination failures on the next mate cycle.
Shell Size and Compatibility
Shell size 11 is the standard insert size for the Miniature CPC line — this cover fits any TE CPC plug or receptacle that carries that shell size. The Miniature CPC series is the compact sibling of the full-size CPC family, sharing the same bayonet-coupling mechanism and contact arrangement but in a smaller envelope.