Seaview Cable Seals / Cable Clams - Seaview Global
ASI 3019310 Internal Plug for Plastic and Brass Cable Glands, Type TCP60, Used to Seal Open Cable Gland, Order Correct Size, Black (Pack of 25): Amazon.com: Industrial & Scientific
ASI 3019290 Internal Plug for Plastic and Brass Cable Glands, Type TCP45, Used to Seal Open Cable Gland, Order Correct Size, Black (Pack of 50): Amazon.com: Industrial & Scientific