1 PCS Pipe Natural Rubber Drain Air Bag Inflatable Bung Stop Plug Block ball. The inside of the pipe must be cleaned, the surface is flat, and there is no burr. Otherwise it will affect the sealing effect and even pierce the airbag.
Cherne 269921 Pipe Plug, Mechanical, 3 In, Natural Rubber
Natural Rubber. & Recepticles. Electrical Outlets. Light Industrial. and Enclosures. Electrical Boxes. General Purpose. & Industrial.