Seal member

摘要

A seal member comprises a resilient material and allows a pass-through member 105 to pass through an opening 106 while closing a gap formed between the pass-through member 105 and the opening 106, and the periphery of the opening 106 is made to constitute a wavy and annular sealing portion 117 which undulates in a direction in which the pass-through member 105 passes through the opening 106.