Seal Member, Liquid Discharge Head Having the Same, and Liquid Discharge Apparatus

摘要

A seal member to be arranged between a first member having a first flow channel and a second member having a second flow channel, including: an elastic portion formed of an elastically deformable first material and including at least a communicating portion provided with a communicating hole which communicates a first flow channel and a second flow channel; and a main body portion formed of a second material having higher liquid-resistant properties than the first material and configured to surround the elastic portion in a state in which at least a flow channel seal surface of the communicating portion is exposed.