nVent Hoffman Hazardous Location Hole Seal Suitable for 1 1/4" Conduit or M40 56mm Stainless Steel Metallic

56x56x18mm. Secure sealing with silicon rubber gasket. Sealed pushbutton holes, conduit openings and knockout openings against dust, dirt, oil and water. Easy installation in enclosure cutouts with self-centering hole seals.