Combined seal for carrier roller

A combined seal for a carrier roller comprises an upper buckling piece, a bend seal and a main shell, wherein the lower surface of the upper buckling piece is sequentially provided with a plurality of annular column protrusions from outside to inside, an annular groove is formed between every two annular column protrusions, and a shaft penetrating hole A is formed in the innermost portion; the upper side face of the bend seal is sequentially provided with three annular column protrusions from outside to inside, an annular groove is formed between every two annular column protrusions, and a cylindrical cavity structure is formed on the innermost portion; the upper surface of the main shell is provided with an annular groove C, a cylindrical empty groove is formed in the center of the interior of the main shell, an annular clamping groove is formed in the center of the bottom of the cylindrical empty groove, a shaft penetrating hole C is formed in the center of the bottom face of the annular clamping groove, the upper buckling piece is connected with the bend seal in a buckled mode, and a combined body of the upper buckling piece and the bend seal is connected with the main shell in a buckled mode. The combined seal for the carrier roller has the advantages of being reasonable in structure, convenient to install and detach and good in waterproof and dustproof effect.