Plastic Tube Cap Structure: Divided into internal insertion type (internal plug type) and external clamp type (overcoat type).

Function and Usage: Often used for dustproofing, sealing, and aesthetic purposes on various types of round tube ends. The cover installed on the inner diameter of the tube is called an inner plug-type plastic tube cap, while the one installed on the outer diameter of the tube is called an outer casing-type plastic tube cap.