CW 3 Part Cable Gland 20 mm to 90 mm S & L Use with SWA, plastic and rubber (Elastomer) sheathed cables. Used in dry indoor application for armoured cable. CW 4 Part Cable Gland 20 mm to 90 mm S & L Suitable for SWA, cable that are plastic or rubber sheathed. The outer seal rated to IP66 grips sheath of cable.