Sta-Kon RB867-200M EXP INS VIN RNG TRM 18-14 No8 MYLAR

It takes 18 to 14 AWG stranded copper conductor. One barrel covers all three gauges in that range, so 18, 16, and 14 AWG all terminate in the same part. Anything 12 AWG or larger needs a different terminal, typically the yellow-coded size up.

Yes. The RB867-200M is covered under UL file E9809, which is what an inspector or a spec writer on an institutional job will want to see cited for a wire termination.

Use the ring, which is what the RB867-200M is, where the connection must not come loose if the screw backs off slightly, since the closed ring stays captive on the stud. A fork terminal is faster to install and remove because it slides out sideways without pulling the screw all the way, which is why it gets used on service panels and control gear that get re-landed often. For vibration-prone equipment, motor leads, and anything you do not want falling off a stud, the ring is the right choice.

Copper, with a vinyl insulating sleeve over it. That means it is for copper conductors, not aluminum. Terminating aluminum wire requires a terminal rated AL or AL/CU, and putting aluminum in a copper-only barrel is the kind of connection that overheats.

The manufacturer part number is RB867-200M from Sta-Kon. Order by that number to keep the same 18-14 AWG barrel, No. 8 ring, and blue vinyl sleeve across the panel so your crimp tooling and die setting stay unchanged.

Blue is the standard trade color for the mid-range barrel, and on this part it corresponds to 18-14 AWG copper wire. Electricians and panel builders use that blue sleeve as a quick visual check in a crowded terminal block, but the printed gauge range on the part is the governing spec.

Vinyl is the standard general-purpose sleeve material and is fine for typical control panel, appliance, and machine wiring. For high-heat locations, say close to a heating element or inside an engine compartment, specify a nylon insulated or heat-shrink insulated ring instead, since nylon tolerates more heat and abuse than vinyl.

Yes, country of origin is the United States. That matters on federally funded and Buy American jobs where every bill of material line has to be sourced.