Home / Ducting / Attenuators & Ancillaries / Intunescent Duct Sealant Intunescent Duct Sealant £4.51 DUCTMASTER PVC intunescent duct sealant. Intunescent Duct Sealant quantity Add to basket SKU: PVCFSEAL Categories: Attenuators & Ancillaries, Ducting Tag: Sealant Product ID: 10499