The OMRON A22NZ-A-402 Metal Hole Plug is a reliable solution for sealing precut panel holes, designed for future expansion in industrial automation setups. Compatible with panel thicknesses ranging from 0.8 to 6.0 mm, this plug includes a rubber seal for enhanced durability and fit. Ideal for use with the A22N Series Push Button, it ensures a secure and professional finish in control panels. Available from multiple distributors, this component is a cost-effective choice for maintaining panel integrity and preparing for future upgrades.