Multi-hole Seals Use a multi-hole seal in those applications where more than one non-terminated cable or wire needs to be inserted into the same cutout. The seals below are to be used with standard industrial domed glands by ITC (plastic or brass) after having removed the original internal rubber seal. Features and specifications: ? Operating Temperature: -20 to 80ºC (permanent) ? Material: Nitrile Rubber (NBR). Silicone and Viton available