It is the (medium size) simple substance of the female terminal.
Please buy the wire seal separately;

product contents
Maker Sumitomo Wiring Systems
Series TS/HX/DL
Standard size 187
Waterproofing/non-waterproofing Waterproofing
M/F F
Correspondence electric wire size AVS0.5-1.25mm2 (medium size)

Simple substance of the corresponding wire seal
■Medium size wire seal "WS7165-0347TS-DL-DGRE"
●Application electric wire size 0.5-1.25mm2 (AV/AVX/AEX/AVS)
1.25-2.0mm2 (AVSS) electric wire finish 2.0-2.9mm outside diameter

In the case of the set product of a terminal and the wire seal, it is this
◆"A terminal (medium size) and a wire seal" (medium size)
●F187WP-TS-M-M