Killark gasket hubs feature lay-in design for sealing out moisture and protecting electrical installations against corrosion. They are made of industrial grade neoprene for resistance from ozone, sunlight & oils. These UL-listed hubs are compatible with copper free aluminium, malleable iron conduit bodies and are available in 1/2, 3/4 and 1 inch hub sizes. Raptor Supplies also offers conduit body coverfeaturing screw-in design ensuring no gaps between male and female threads.