nVent Hoffman Hazardous Location Hole Seal Suitable for 1 1/2" Conduit or M50 165mm Stainless Steel Metallic

165x216x19mm. 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.