Sealing member in an injection molding machine

An injection molding apparatus providing a supply of flowable material to a mold cavity, said apparatus having a hot runner system comprising:

• a bridge manifold in fluid communication with said supply of flowable material, said bridge manifold having at least one first melt channel formed therein for the fluid communication of said flowable material,
• at least one sub-manifold located between said bridge manifold and said mold cavity, said sub-manifold having at least one second melt channel formed therein for the fluid communication of said flowable material,
• at least one sealing member located between said sub-manifold and said bridge manifold, said sealing member having a melt duct formed therein such that said melt duct is in fluid communication with said at least one first melt channel and said at least one second melt channel when said flowable material is being communicated to said cavity, said sealing member further comprising a top surface abutting said bridge manifold for the concentration of a sealing pressure adjacent the periphery of said melt duct.