Hellermanntyton non metallic conduits standard weight hg sw series hellermann tyton 166 11104 the hellermanntyton 166 11104 hg sw21 is a non metallic conduit from the hg sw series the conduit has a high impact strength is highly resistant to solvents and oils and recovers if crushed this is a standard weight corrugated flexible conduit ideal for industrial applications which include machine building plant construction control panels and public buildings hellermanntyton 166 11104 hg