Disclosed are a radial seal assembly (12), an end seal (1) and a trocar (100). The radial seal assembly (12) contains an upper pressure plate (12-1), a protective piece (12-2), a locating plate (12-3), a funnel type sealing ring (12-4), a lower pressure plate (12-5) and a corrugated sealing ring (12-6), wherein at least two connecting hooks (121-2) for connecting the locating plate (12-3) are provided on the upper pressure plate (12-1), at least two connecting grooves (125-2) for connecting the locating plate (12-3) are provided on the lower pressure plate (12-5), at least two connecting grooves (123-1) for connecting the upper pressure plate (12-1) and at least two connecting hooks (123-2) for connecting the lower pressure plate (12-5) are provided on the locating plate (12-3), and a concave-convex snap cooperation structural connection is used between the upper pressure plate (12-1) and the locating plate (12-3) and between the lower pressure plate (12-5) and the locating plate (12-3). The radial seal assembly (12) is not only convenient to assemble, and high in production efficiency, but is also capable of effectively resisting against the elasticity of sealing ring materials, and the connection is firm and airtight. The end seal (1) not only contains the radial seal assembly (12), but the concave-convex snap cooperation structural connection is also used between an upper cover (11) and a lower cover (14). The trocar (100) contains the radial seal assembly (12), and has the advantages of being convenient to assemble, being capable of effectively resisting against the elasticity of the sealing ring materials, and having firm and airtight connection.
