To provide a convenient-to-handle sealer assembly in which a thread- formed coupling part can be made into a compact form for storing and carrying by making the thread-formed coupling part out of a twisted yarn.

A sealer 1 is formed by providing an engaging male part 3 at one of ends of a thread-formed coupling part 2 and providing an engaging female part 4 to engage with the male part 3 at the other end. The male part 3 is connected with first connections 5b projecting like a comb from a first coupling rod 5a of a first coupling member 5 via first cuts 5c, and the female part 4 is connected with second connections 6b projecting like a comb from a second coupling rod 6a of a second coupling member 6 via second cuts 6c. Thus, the sealer assembly 10 formed with an assembly 6 comprising a plurality of the sealers 1 coupled with the first coupling member 5 and the second coupling member 6 is obtained, and the thread-formed coupling part 2 is formed of a twisted yarn.