This product is used for duct cleaning. The foam ball for pigging also serves to control the continuity of ducts and to avoid duct projectile rejections in case where ducts are closed (overpressure at the front of the duct projectile).
To be installed at the back of the duct projectile.
Interior diameter: 25-28 mm.
Pre-lubricate the foam ball before sending it with the use of compressed air.