Pipe Diameter: 0.6″. Flange Diameter: 2.8″. Factory-manufactured one-piece design for rapid installation with plastic and metallic pipes in watertight and fire-rated divisions. Heavy gauge, chromium rich 316 stainless steel construction. Provides watertightness up to 6 bar and gastightness up to 1 bar. Solid design requires pipe to be inserted through the watertight grommet. Flexible intumescent liner accommodates vibration and will not damage pipe. Resistant to aging and weathering.