Amazon.com: GITRUAX Cable Glands kit (NPT 32pcs) waterproof cable pass through wire connectors,strain relief cord connector,anti-aging and will not loosen,IP68,Suitable for 4-18 mm cable diameter : Industrial & Scientific
PXA980 - Bulgin Limited - Cable Gland Kit, 3 Pieces of size 18-20mm, 16-18 and 14-16mm Diameter Cable Glands
Axis Cable Gland Kit 65.3mm Diameter Max P/N: CW 63L