ipsos-components/src/material-examples/select-no-ripple/select-no-ripple-example.html

Material Design components for Angular

<mat-form-field>
  <mat-select placeholder="Select an option" disableRipple>
    <mat-option value="1">Option 1</mat-option>
    <mat-option value="2">Option 2</mat-option>
    <mat-option value="3">Option 3</mat-option>
  </mat-select>
</mat-form-field>