Part number and name

[rayfloyd170]

can you help me identify the encircled image below with its part number or give me its name? it is made of rubber covering the electrical wire from engine going inside to the body. i think it is some kind of rubber grommet but i am not sure and cannot find the part number either in the catalog.

mine was partially chewed by rats.. i did not notice it until now apart from the damaged hydraulic engine mount which i already replaced.

can this circular rubber be replaced without removing the wire harness? if not i will just put some Rubber sealant to it.