Grant Fks94 Black Neoprene Gasket Flue Spigot

The Grant FKS94 is a black neoprene gasket that seats at the flue spigot on Grant oil boilers. It forms the sealing face between the flue spigot and the boiler casing or flue outlet, closing the joint against flue gas escape and air ingress. Neoprene is chosen for its resistance to heat, oil and combustion by-products in this position.

• Soot staining or dark marks around the flue spigot joint, indicating flue gas leakage
• A visible gap, split or hardened, cracked edge on the gasket itself
• Combustion readings drifting outside the expected range on a service check
• Draughts or a smell of combustion products near the flue connection
• Gasket flattened or compressed so it no longer seals when the spigot is refitted

• Check the boiler model and serial plate, then confirm FKS94 against the spares listing for that appliance.
• Note the alternative number 2160042 when cross-referencing supplier catalogues.
• Inspect the flue spigot and mating face for corrosion or distortion before fitting a new gasket; a damaged face will not seal.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.