Seal cap

Abstract

A seal cap includes a main body, a retaining cover and a fastening ring. The main body has a slab shape and is flexible. The main body includes a press collar extending upward from the main body. The press collar has a connecting portion therein. The retaining cover covers the main body, and includes an annular inner wall, an outer covering body, a trough and a coupling portion. The outer covering body covers the annular inner wall and has at least one press opening. The trough is formed between the outer covering body and the annular inner wall, and faces downward. The trough communicates with the at least one press opening. The press collar is inserted located in the trough. The coupling portion encircles the outer covering body, and is located above the engaging portion. The fastening ring is located at an outer side of the connecting portion of the main body, so that the connecting portion is tightly connected to the annular inner wall of the retaining cover. When in use, the seal cap of the present invention is coupled to the opening of a container. The top of the container leans against the coupling portion, and the circumferential wall is against the container to seal the container.

1 . A seal cap, comprising:
 a main body having a slab shape and being flexible, the main body comprising a press collar and an engaging portion, the press collar extending upward from the main body, the engaging portion being disposed around the main body, the engaging portion encircling the press collar, the press collar having a connecting portion therein;   a retaining cover covering the main body, the retaining cover comprising an annular inner wall, an outer covering body, a trough and a coupling portion, the outer covering body covering the annular inner wall, the outer covering body having at least one press opening, the trough being formed between the outer covering body and the annular inner wall and facing downward, the trough communicating with the at least one press opening, the press collar being inserted in the trough, the coupling portion encircling the outer covering body and being located above the engaging portion; and   a fastening ring located at an outer side of the connecting portion of the main body so that the connecting portion is tightly connected to the annular inner wall of the retaining cover.   
     
     
         2 . The seal cap as claimed in  claim 1 , wherein the engaging portion has a circumferential wall which extends upward from an outer side of the engaging portion. 
     
     
         3 . The seal cap as claimed in  claim 2 , wherein the press collar and the engaging portion are in an annular shape, and the press collar has a Ushaped crosssection. 
     
     
         4 . The seal cap as claimed in  claim 1 , wherein the press collar and the engaging portion are in an annular shape, and the press collar has a Ushaped crosssection. 
     
     
         5 . The seal cap as claimed in  claim 1 , wherein the main body is a plastic slab. 
     
     
         6 . The seal cap as claimed in  claim 5 , wherein the retaining cover further comprises two press members, the outer covering body having two press openings at two opposing sides thereof, the two press members being disposed at the two press openings and rotatably connected to the outer covering body, the two press members leaning against the press collar. 
     
     
         7 . The seal cap as claimed in  claim 1 , wherein the coupling portion has an annular engaging opening at a bottom of an outer periphery of the coupling portion.