ROXTEC's RG M63/1 seal. Roxtec's RG M63 is a compact kit sealing solution for cabinets that includes round cable entry for standard round knockouts and a round entry seal for multiple cables. The transit fits standard ISO 63 knockouts and can accommodate from 1 – 9 cables. This cable gland option is also available in 316 L stainless steel. Roxtec's RG M63 housing is made of nickel plated brass. The seal is UL and NEMA 4, 4X, 12, 13 and IP 66/67 rated.