Coupler Seal Sleeve

A cylindrical shaped item constructed of pliable nonmetallic solid or laminated materials. it is designed to fit around flanged or beaded end tubing, ducts, piping, and the like, to form a tight and effective seal against gases and liquids; when compressed with a clamp. for items used to convey air under low pressure, see hose, air duct. excludes packing, preformed; tubing, nonmetallic; and bushing, rubber.